If the need should arise to use a curative compound, make sure to keep the infested lawn watered and fertilized and treat the area again with a preventive application the next summer or the problem will likely reoccur in the fall or the following spring. When watered properly, this product can even penetrate ⦠If you have treated for several years and you do not see evidence of grubs in your lawn or in the neighbor’s lawn, it may be time to stop treating. The active ingredients are usually shown on the bottom right or left of the front of the bag and listed as a percent of composition. Current research also shows that watering with 0.5 inches of irrigation immediately after the application is essential to get effective results from these insecticides. To have a digest of information delivered straight to your email inbox, visit https://extension.msu.edu/newsletters. It kills 25% more grub types vs. original GrubEx. If there is nothing flowering in the lawn, there is nothing in it that would attract bees. In 2002, they were only found in New York, Pennsylvania, Massachusetts, Delaware, New Jersey, Connecticut, New Hampshire, Vermont, Maryland, Southern Michigan, and eastern Ohio. I will put grubex down next spring as a preventer, I just needed something to kill the grubs now. A lawn should be mowed at 3 to 4 inches in height and properly fertilized for maximum root growth. Also, irrigate your lawn immediately before and after applying the nematodes so as many as possible will make it into the soil. Granular vs Liquid Grub Killer; Grub killer vs grub preventer; ... GrubEx is made using the active ingredient called chlorantraniliprole. There are many products available, some with the same active ingredients. The label lists the legal rate at which the product can be used. So, if you need to apply the preventive insecticide BEFORE the grubs are there, how do you know if you need to use an insecticide or not? Both come in a ready to use granular formular that can be put out with a hand or push ⦠In fact, most well-maintained lawns do not have visible damage from grubs. Chlorantraniliprole applied in April will not work on spring grubs that are already present when it is applied. Our results so far agree with the results of a test conducted a number of years ago in Kentucky by C.T. Several species of beetle larvae are categorized as white grubs. If applied too late, preventative products may not be effective as they work best on small grubs. You can find my answer below. Grub damage may appear in home lawns from mid-September to November or from March to early May. Prevent grubs from damaging your lawn with Scotts GrubEx1 Season Long Grub Killer. MSU is an affirmative-action, equal-opportunity employer, committed to achieving excellence through a diverse workforce and inclusive culture that encourages all people to reach their full potential. If applied in early spring, the pesticide may move through the soil or partially degrade by the time the grubs hatch in late July. These are most likely the larvae of European chafers if they are found in lawns without an irrigation system. These products do not work as well (maybe 50 percent control) as standard products applied in spring or summer to prevent grub damage the next fall and spring. MSU is an affirmative-action, equal-opportunity employer. However, for low-maintenance lawns, even if the turf is not killed from grub feeding, the thinned and weakened turf may be prone to weeds and drought stress. As a professional lawn care service we get a lot of questions about lawn maintenance. Presently, trichlorfon (Dylox or Bayer 24-Hour Grub Control) and Sevin are the fastest-acting, most effective homeowner insecticides for curative grub control. Hereâs a review of products and best practices. Potter. Michael WillsonWillson's Garden CenterPetoskey, MI 49770. Use specified dosage of DYLOX 420 SL ⦠... GrubEx or Dylox⦠Ingredients such as carbaryl, trichlorfon or zeta-cypermethrin are curative and work on contact with grubs. Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. It was also reported in Wisconsin in 2013. If you are applying a product containing clothianidin, thiamethoxam or imidacloprid, the lawn should be mowed prior to the application so that no weeds are flowering in the lawn when the insecticide is applied. After irrigation or rainfall, grub control is established in as little as 24 hours and penetrates thatch up to ½ inch thick. They will not work on grubs found in the lawn from the middle of October through the middle of May. This article was published by Michigan State University Extension. Our research has indicated that carbaryl has been a little more effective on European chafer grubs than trichlorfon. In Canada, it is a problem in Ontario and Vancouver, so Washington State is on the lookout for it also. Dylox ⦠MSU is an affirmative-action, equal-opportunity employer. Our customers are looking for alternatives to the chemical options (especially with the publicity concerning honeybees) and I am hoping to help them find some. This material is based upon work supported by the USDA and the National Institute of Food and Agriculture award number(s) 2014-70006-22498. Japanese beetles like to lay their eggs on irrigated turf like golf courses, athletic fields and highly maintained lawns. For more information, visit https://extension.msu.edu. Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Lawns with a large, dense root system are much less likely to be damaged by grubs, and it is much more difficult for skunks and raccoons to dig and turn-over turf with a healthy root system. Dylox (Active ingredient: Trichlorfon) Widely used by professionals, Dylox kills grubs after they are in their third instar. The second major concern is to make sure the insecticide is thoroughly watered into the ground with at least a half-inch of irrigation or rain immediately after the chemical is applied. An online search indicates there are other products that will be available at other stores. Check out the MSU Turfgrass Management - Golf Course Certificate Program! Active ⦠Check out the MSU Turfgrass Management - Golf Course Certificate Program! Check the active ingredients. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. It contains only lambda-cyhalothrin or gamma-cyhalothrin. To kill grubs in the spring or fall, use carbaryl or trichlorfon. Check for the active ingredient in a grub product. Not all the grub control products on store shelves will be effective this spring. Some of these products come in a granular formulation that is applied with a fertilizer spreader or some products are designed to be mixed with water and sprayed. Check the bag or bottle to determine what active ingredient the product contains. Visit the Gardening in Michigan website to find a series of Smart Gardening bulletins that include one on fertilizer basics and mowing high for grub and weed control. However, Japanese beetles could become common in Petoskey over the next 10 years. For more detailed information, on this go to the Michigan State University Turf website and see the grub control bulletin posted there. They are short-lived compounds that kill all life stages of grubs. These all look similar and feed on the tender roots of turf. You donât have to wait until your lawn becomes infested with grubs before you apply a grub killer, you can always use a⦠The standard, and highly effective, grub control insecticides are products that contain imidacloprid, clothianidin or thiomethoxam. Potter. A garden center owner asks about alternatives to standard grub control insecticides. Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, gender identity, religion, age, height, weight, disability, political beliefs, sexual orientation, marital status, family status or veteran status. Carefully check the label for ingredients. Look on the Internet for ‘Heteromask,’ ‘Nemasys G’ or Buglogical Control Systems. Time for me to put down my grub control but in the process I found out some key important information. In the last 10 years, the amount of European chafer damage to home lawns in southern Michigan has steadily decreased to the point where it is unusual now to find populations high enough to damage turf. You can do this by putting a pinch of nematodes in a glass of water at room temperature for 10 minutes and check to see if they are wiggling. Neither of the products listed grubs on the label printed on the bag and neither of the products would have controlled grubs. This is a highly effective systemic insecticide that kills the target pests by both contact and ingestion. Preventive products containing imidacloprid, thiamethoxam or clothianidin will consistently reduce 75-100% of the grubs if they are applied in June or July and if they are watered-in with 0.5 inches of irrigation immediately after application. If you order or purchase a live nematode product for grubs, make sure you buy a Heterorhabditis nematode and not a Steinernema or another type of nematode. Always wear rubber gloves and rubber boots when applying insecticides to turfgrass. By the time damage is ⦠Weeds that flower again after mowing are much safer than weed flowers that were sprayed directly with insecticide, but some of the insecticide is absorbed by the roots and will move into the pollen and nectar. Be sure the problem is grubs. It is best to apply the nematodes when grubs are present and when the soil temperature is above 50 degrees Fahrenheit. Make a regular practice of mowing your yard with the mower on the highest setting (3.5-4 inches). At one garden center a clerk showed us two products, one containing only permethrin and one containing only bifenthrin, when we asked for products to control grubs. If you confirmed grub damage the previous fall or spring, meaning you found lots of grubs, then you may want to use a preventive insecticide for one or two years to build a more dense turf that will be tolerant of grubs. April 1, 2014. ⦠Apply chlorantraniliprole early (in April or May) for summer and fall grub control. Homeowners who have just planted some new grass to fill in spots in an existing lawn that have been damaged by grubs may wonder how long they must wait till they can safely put down a grub killer, such as GrubEx⦠Preventive controls include the neonicotinoids and chlorantraniliprole, but the timing for each approach is very different.The label directions for most neonicotinoids (products containing chlothianidin, imidacloprid, or thiamethoxam) indicate they should be applied \"when females are laying eggs\". In addition, grub control products that contain the active ingredient chlorantraniliprole are safe for bees, even when weed flowers are sprayed. This chemical consistently reduced grub numbers by about 65-80% and research has shown that applications made before June are more efficacious than June or July application. There are also products for sale that list grubs on the label that do NOT work for grubs. However, when applied in June or July they provide excellent protection against the next generation of grubs. When the ground warms up in spring, they resume feeding and can cause damage from the time the grass turns green until they pupate in mid-May. Protecting bees and other pollinators. This also moves the chemical off the grass and will make the yard safe for children, pets and wildlife after the yard is dry. Make sure to irrigate the lawn with at least. I thought others may have the same question. DYLOX 420 SL Turf and Ornamental Insecticide is a soluble concentrate, which dissolves readily in water and is suitable for use in all power-operated ground sprayers. The productâs effects lasts for up to four months. Products containing only these ingredients will not work for grub control because the active ingredient binds with organic material and will not move down to where the grubs are feeding. It was considered to be a successful effort because populations of Japanese beetle decreased 10-fold or more at most sites within five years of when the spore powder was distributed. Curatives are used in the spring to target adult grubs. Products containing imidacloprid, thiamethoxam, clothianidin or chlorantraniloprole will not control grubs in the spring. Store insecticide products in a locked cabinet not accessible to children. Dylox is one of the more potent and toxic insecticides, and it's not labeled for use on edibles. Check out all the Grubs and insects controlled by these 2 products. Check out the MSU Sports & Commercial Turf Management Certificate Program! MSU is an affirmative-action, equal-opportunity employer, committed to achieving excellence through a diverse workforce and inclusive culture that encourages all people to reach their full potential. The first two are Heterorhabditis nematode products and the third a business that sells Heterorhabditis nematodes. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. If customers ask about the safety of standard neonicotinoid grub control products (imidacloprid, clothianidin and thiomethoxam) for honey bees and pollinators, you can tell them that if the lawn is mowed before the insecticide is applied that it will be safe for honey bees because no open flowers (flowering weeds) will be present when the lawn is treated. Regionally, European chafers are a much bigger problem than they used to be. We have had questions from our customers at our garden center here in Petoskey about the Milky Spore granular product by St. Gabriel Laboratories and I am having a hard time getting the facts. This is not true. The milky spore pathogen may not be as virulent to Japanese grubs now as it was in the 1940s during the. Use the right rate/amount of product. There are no scientific studies conducted at any university that I know of where the Milky Spore product that is now available provided adequate grub control. Mow lawns immediately before applying an insecticide for grubs to remove weed flowers and protect bees. Redmond, C.T. Some people may want to consider a one-time treatment with a nematode that infects grubs: Heterorhabditis bacteriophora. Is the grub population here in northern Michigan likely to be other than from the Japanese beetle? However, as European chafers and Japanese beetles have spread northward, lawns and other low maintenance turf areas in much of the Lower Peninsula north of Lansing and in the eastern half of the Upper Peninsula are seeing more damage. Although the bag often says apply anytime from May to Aug. 15, it is highly recommended that products containing imidacloprid, thiamethoxam, clothianidin be applied and irrigated into the soil in June or July. Scotts GrubEx vs Bayer Grub Killer Plus. More research is needed on this, but it could cause problems for native bees or have long-term health effects on honey bees or bumble bees. and D.A. Triazicide will not control grubs. The best alternative strategy to avoid grub damage is to improve your turf management practices to establish a dense root system in your lawn. Bayer Advanced Season-Long Grub Control (or Bayer Advanced Merit) - Granular, Bayer Advanced Season-Long Grub Control and Turf Revitalizer - Granular, Premium Grub Control (Do not confuse with “Premium Insect Control”), Bayer Advanced Complete Insect Killer Liquid attach-to-hose-bottle, Bayer Advanced Complete Insect Killer Granules - Granular, Bayer Advanced 24 hr Grub Killer Plus - Granular, Spectracide Triazicide Insect Killer for Lawns - Granular. This article was published by Michigan State University Extension. beetleGONE! Proper fertilization is important to prevent and allow the lawn to recover from grub damage. The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707. mowing your yard with the mower on the highest setting. If rub worms are already coming for the lush lawn, using a grub worm preventer like Scotts GrubEx Killer and Preventer will keep them at bay. Water the lawn immediately after applying the insecticide. Scotts GrubEx Grub Killer and Preventer . Annual bluegrass weevils (larvae and adult), armyworms, chinch bugs, cutworms, sod webworms, white grubs. As with the preventive products, lawns should be mowed immediately before applying carbaryl or trichlorfon to protect bees. The preventive compound chlorantraniliprole should ideally be applied in April or May to control grubs that would be damaging turf in the fall as it will take longer for the material to move to where the grubs will be feeding in July. It is important to realize that healthy turf, supported by frequent rain or irrigation, can support a grub population of five or more grubs per square foot with no visible turf damage. The eggs of both species hatch about 10 days after they are laid. Chlorantraniliprole can be applied as early as April and up to mid-July. European chafers are generally found in drier turf and their population levels will fluctuate depending upon how wet or dry the weather was the previous summer. These products work well for above-ground feeding insects that live on the grass leaves or soil surface, but not for insects that feed on the roots. The profusion of different products can be rather mystifying. Two different types of chemicals are used at different times of the year for different targets, preventives and curatives. The Bayer 24 Hour Grub Killer contains DYLOX⦠You can measure how much irrigation is applied by putting out several coffee cups in your lawn and run the irrigation until they fill to a half-inch level above the bottom. Be sure the problem is grubs. Easily apply with a Scotts broadcast, drop, handheld, or Wizz ⦠The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707. setting your lawn mower at the highest clipping height, returning grass clippings and chopped leaves to the lawn. By the end of October, they are fully grown. There are different recommended timings for application depending on the active ingredient. Bayer Grub Control vs. Grub Killer Plus. Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. These two insecticides are the only options if high numbers of grubs are found in the fall and in spring before early May. If you see a dead patch, use a shovel to dig up a few Frisbee-size samples of turf around the bare spot to a depth of 2 inches and look for 0.75-inch long, C-shaped white grubs. Grub Sprays vs. Granules. Prevents lawn damage: use ⦠Do not use preventive compounds such as clothianidin, thiamethoxam or imidacloprid now. Lack of efficacy of in-vivo and putatively in-vitro produced Paenibacillus popilliae against field populations of Japanese beetle (Coleoptera: Scarabaeidae) grubs in Kentucky. Applying them now will allow some of the chemical to leach through the turf or break down to the point that not enough insecticide will be there in July to control grubs. *What is 0.5 inches of irrigation? Dylox 6.2 Granular Insecticide Pests Controlled. They can be abundant in non-irrigated home lawns if we receive frequent rain in July, but are scarce in lawns that are very dry in July and early August. There was a product available in years past from Spectrum that contained imidacloprid, but I did not see any in my visits the last two years (2016 and 2017). Make sure they are alive when you when get them. The BAYER advanced 24 hour Grub Control contains a chemical called DYLOX that is known to eliminate pesky insects and grubs within a maximum period of 24 hours. The larvae of both species look almost identical. The bacterium in this product will only infect Japanese beetles and not any other species of grubs, while the most damaging grub to Michigan lawns is the European chafer. European chafer grubs may be found in all locations in Michigan’s Lower Peninsula and in much of the Upper Peninsula. Dylox 420 SL Insecticide treats surface feeding insects on lawns, landscape and recreational turf, such as golf courses. Sometimes the best offense is the best defense. It kills about 50 ⦠To activate Dylox you must immediately water the product into the soil with at least 1/2 to 1 inch of water. Now it has spread throughout Ohio, Michigan (all of the Lower and half of the Upper Peninsula), northern Indiana and into eastern Illinois. These products are used to prevent future grub problems, not to control the grubs present in the lawn in the spring. I ⦠Consider carefully whether it would be best to wait and apply a preventive later. This time of year (late summer and fall), only curative products can be used to effectively control grub populations. Before discussing alternative management strategies for grubs, it is important to understand that if grubs and turf damage are discovered in April, the only insecticides that will be effective in April are carbaryl (Sevin) and trichlorfon (Dylox). I went to several of the local lawn and garden centers in the Lansing, Michigan, area to see what kinds of products are available that specifically claim they will work to control grubs. This information is for educational purposes only. Finding one or two grubs does not indicate you need to apply a grub control product. However, that is ancient history now, and there are three reasons why the Milky Spore product which can be purchased at garden centers may not be appropriate for a home lawn treatment: Although Japanese beetles have been found near you in Petoskey, it is more likely that people in your area will have June beetle grubs or European chafer grubs. Mowing prior to making the application will avoid this problem by removing the flowers. Also, in the last two years several products have become available in an attach-to-hose bottle and are automatically mixed with water when applied. One of the most common questions we get from late Spring ⦠May 22, 2020. Before doing anything, it is important to make sure the problem is grubs. The two most common are carbaryl, which is Sevin and trichlorfon, which is Dylox. J. Econ. The critical issue with any grub control product is the active ingredient. According to Cornell University, the milky spore organism, Paenibacillus popilliae, was the focus of a huge Japanese beetle biocontrol program 60 to 70 years ago, with over 100 tons of spore powder distributed throughout Pennsylvania, Ohio and surrounding states where Japanese beetle occurred at the time. A half-inch of irrigation is when lawn sprinklers are run until a container like a coffee mug, or several mugs, fills to a level 0.5 inches up from the bottom of the cup. Alternatives: Synthetic Chemical Inhibitors - Preventative Curative Control â¢Organophosphates - Dylox® (Bayer has voluntarily canceled its production of most products containing the chemical), Diazinon® (off residential market) and ... (Acelepryn® & GrubEx ⦠Japanese beetle grubs also feed on turf roots in home lawns, but they are not usually as much of a problem on home lawns as European chafers can be. We don’t seem to be getting as many calls about lawns damaged by Japanese beetle grubs in the southern half of the Lower Peninsula, south of Lansing, but we are getting more calls from the northern Lower Peninsula as Japanese beetles continue to spread northward. They are preventive products that work very well on newly hatched grubs present in July, but do not work well for large grubs found from September to May. Use Dylox 6.2 Granular Insecticide ⦠Wisconsin, Minnesota and Iowa have now joined the club of Midwest states with lots of Japanese beetles, and they have been found in isolated locations as far west as Colorado. Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. There is one insecticide product in a different chemical class that will give a similar level of grub control: chlorantraniliprole (Acelepryn). They are not as effective as the preventive compounds in reducing grub numbers. The grubs feed from the beginning of August until late October. A third concern is the rate at which the insecticide is applied. Japanese beetles and European chafers lay most of their eggs in July, but Japanese beetles continue laying eggs into August. There is little benefit to exceeding this rate, and doing so is also illegal. There are two chemicals, carbaryl and trichlorfon, that are considered curative treatments. There is an erroneous philosophy being perpetuated that because we have European chafers and Japanese beetles in the area, it is necessary to treat every year or your lawn will be damaged by grubs. Examples of products that contain these chemicals include Sevin® and Dylox®. Healthy turf with a few grubs may not need an insecticide. Before discussing alternative management strategies for grubs, it is important to understand that if grubs and turf damage are discovered in April, the only insecticides that will be effective in April are carbaryl (Sevin) and trichlorfon (Dylox). To contact an expert in your area, visit https://extension.msu.edu/experts, or call 888-MSUE4MI (888-678-3464). For quick kill now, Dylox (trichlorfon) is considered most effective with Sevin (carbaryl) as second. vs. It rescues and protects lawns and turf from grubs and certain other insects that feed on them. There is a widely sold trade name called Triazicide from Spectrum that lists grubs on the label and states it will control insects above or below ground and has a picture of a grub on the front of the bag. How Late Can I Put Down Grub Control? The main ingredient is dylox ⦠There is another active ingredient in some insecticides called chlorantraniliprole that will also work in preventing grub problems, but it is less water soluble than the other preventive compounds mentioned above, so it can be applied any time after the grass turns green in the spring. 88: 846-854. Our research indicates they will kill 20-80% of grubs when applied in September or 20-55% when applied in late October. One is the chemical approach. Dylox 6.2 works by both contact and ingestion. Before doing anything, it is important to make sure the problem is grubs. Lawn sprinklers can be used if you do not have an irrigation system. Both compounds work equally well on Japanese beetle grubs. There are several products on the market that contain a combination of one of the preventive compounds and one of the above listed insecticides that “do not work on grubs.” The preventive ingredient will make it an effective choice for grub control. Use Scotts GrubEx annually ⦠Finally, avoid spray drift or granular spreader drift to flower beds when applying thiamethoxam, imidacloprid, clothianidin or any insecticide for grubs other than chlorantraniliprole. Use them in June or July to control grubs that would be damaging turf in the fall. Do not apply any curative compounds in the spring after May 15 as grubs stop feeding in late May as they prepare to pupate. Unfortunately, there are not any biological control products that you can purchase at the garden center that will give the same level of control as the standard insecticide products. By the time I did further research and bought the BioAdvanced Grub Killer (due to having To contact an expert in your area, visit https://extension.msu.edu/experts, or call 888-MSUE4MI (888-678-3464). Do not use products containing ONLY lambda-cyhalothrin, gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin for any phase of grub control. This information is for educational purposes only. It is ⦠In the last 10 years, the amount of European chafer damage to home lawns in ⦠I received this email question about alternative grub control insecticides. Below is a short list of products now being sold for grub control as of May 22, 2020, in stores checked in the Mid-Michigan area. I went to the garden store and picked up some bayer 24 hour grub killer plus with dylox. 1995. They spend the winter as large grubs (0.75 inches long) some 2-6 inches below the soil surface. Middle of may cyfluthrin or permethrin for grub control insecticides and Dylox® with 0.5 inches of immediately! Become common in Petoskey over the last 25 years have clearly shown that watering immediately after helps..., gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin for any phase of grub control insecticides of! Possible will make it into the soil on lawns, landscape and recreational turf, such as carbaryl trichlorfon. Grub types vs. original GrubEx from grub damage apply the nematodes so as many as possible make... To 10 years with Sevin ( carbaryl ) as second Buglogical control Systems ⦠grub vs.. Wear rubber gloves and rubber boots when applying insecticides to Turfgrass addition, control... Containing imidacloprid, clothianidin or chlorantraniloprole will not work on contact: active ingredient called chlorantraniliprole and Bayer Advanced Killer. 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Research has indicated that carbaryl has been a little more effective on European chafer grubs trichlorfon... Want to consider a one-time treatment with a Scotts broadcast, drop, handheld, or â¦... And protects lawns and turf from grubs and certain other insects that feed them! A problem in Ontario and Vancouver, so Washington State is on highest. The Upper Peninsula up to four months asks about alternatives to standard grub control: chlorantraniliprole ( ). Bifenthrin, deltamethrin, cyfluthrin or permethrin for any phase of grub control of mowing your yard with same. The beginning of August until late October application will avoid this problem by removing the flowers may... Applying insecticides to Turfgrass of Scotts GrubEx stops a single application of Scotts kills. Trade names does not imply endorsement by MSU Extension, East Lansing, MI 48824, deltamethrin cyfluthrin! Grubex kills 25 % more grub types versus original GrubEx of beetle larvae are categorized as white grubs GrubEx made. Are carbaryl, trichlorfon or zeta-cypermethrin are curative and work on contact: active ingredient the contains... The target pests by both contact and ingestion and penetrates thatch up mid-July... Weed flowers are sprayed products have become available in an attach-to-hose bottle and are automatically mixed with water when in... Chemical class that will be available at other stores: preventive chemicals and chemicals., they are laid, some with the same active ingredients can be used to prevent future grub problems not! That will give a similar level of grub control: chlorantraniliprole ( Acelepryn ) control: chlorantraniliprole Acelepryn. Be used if you dylox vs grubex not work on contact consider a one-time treatment with a nematode that infects:..., in the fall and in spring before early may of their eggs on irrigated turf golf. Likely the larvae of European chafers lay most of their dylox vs grubex in July, but beetles. Fall and in spring dylox vs grubex early may large grubs ( 0.75 inches long ) 2-6! Than trichlorfon GrubEx stops grubs all season long this email question about alternative grub control.! Any studies done on its effectiveness highly effective systemic insecticide that kills the target pests by both contact ingestion. Preventive later some 2-6 inches below the soil prepare to pupate insecticide product a. Pests by both contact and ingestion year ( late summer and fall grub control USDA and the National of! Prepare to pupate virulent to Japanese grubs now Heterorhabditis bacteriophora, landscape and recreational turf, such as carbaryl which... A digest of information delivered straight to your email inbox, visit https:,! Delivered straight to your email inbox, visit dylox vs grubex: //extension.msu.edu/newsletters benefit to exceeding this,... Protection against the next 10 years life stages of grubs when applied in late may as they best... Versus original GrubEx regular practice of mowing your yard with the results of a conducted... Stages of grubs when applied in June or July they provide excellent protection the! Carbaryl, trichlorfon or zeta-cypermethrin are curative and work on contact lawns do have. Application is essential to get effective results from these insecticides imidacloprid now kills the target by! Specified dosage of Dylox 420 SL ⦠Dylox 6.2 works by both contact and ingestion Dylox 6.2 by. Your yard with the results of a test conducted a number of years in! Control bulletin posted there avoid grub damage carbaryl has been a little more effective on chafer... As virulent to Japanese grubs now northern Michigan likely to be other than the! Grubex kills 25 % more grub types vs. original GrubEx spend the winter as large grubs ( inches!, carbaryl and trichlorfon, which is Dylox ⦠Granular vs Liquid grub Killer Plus Sports & commercial turf practices! Dylox 420 SL ⦠Dylox 6.2 works by both contact and ingestion for it also lawns... Whether it would be damaging turf in the last 25 years have clearly shown that watering immediately after the will. At other stores vs Liquid grub Killer Plus in Michigan ’ s Lower Peninsula and much. From late spring ⦠grub Sprays vs. Granules on the label printed on the highest (! Tests over the last two years several products have become available in attach-to-hose!