Mow lawns immediately before applying an insecticide for grubs to remove weed flowers and protect bees. This material is based upon work supported by the USDA and the National Institute of Food and Agriculture award number(s) 2014-70006-22498. The milky spore pathogen may not be as virulent to Japanese grubs now as it was in the 1940s during the. Now it has spread throughout Ohio, Michigan (all of the Lower and half of the Upper Peninsula), northern Indiana and into eastern Illinois. Lack of efficacy of in-vivo and putatively in-vitro produced Paenibacillus popilliae against field populations of Japanese beetle (Coleoptera: Scarabaeidae) grubs in Kentucky. 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. The first two are Heterorhabditis nematode products and the third a business that sells Heterorhabditis nematodes. Do not use products containing ONLY lambda-cyhalothrin, gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin for any phase of grub control. MSU is an affirmative-action, equal-opportunity employer. Dylox … Some people may want to consider a one-time treatment with a nematode that infects grubs: Heterorhabditis bacteriophora. Bayer Grub Control vs. Grub Killer Plus. 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. 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. Before doing anything, it is important to make sure the problem is grubs. It contains only lambda-cyhalothrin or gamma-cyhalothrin. 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. They are not as effective as the preventive compounds in reducing grub numbers. 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. 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). 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). Japanese beetles and European chafers lay most of their eggs in July, but Japanese beetles continue laying eggs into August. 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. Check out the MSU Sports & Commercial Turf Management Certificate Program! 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. Check for the active ingredient in a grub product. Grub damage may appear in home lawns from mid-September to November or from March to early May. PLUS insect killer: also kills ants, ticks, bill bugs, chinch bugs, crickets, cutworms, earwigs, grasshoppers, and more. Do not use preventive compounds such as clothianidin, thiamethoxam or imidacloprid now. GrubEx with the active ingredient chlorantraniliprole is used for preventive soil treatment. One of the most common questions we get from late Spring … You don’t have to wait until your lawn becomes infested with grubs before you apply a grub killer, you can always use a… This information is for educational purposes only. It will take 10-14 days for the grubs to begin dying after the insecticide is applied. 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. Finding one or two grubs does not indicate you need to apply a grub control product. In addition, grub control products that contain the active ingredient chlorantraniliprole are safe for bees, even when weed flowers are sprayed. Easily apply with a Scotts broadcast, drop, handheld, or Wizz … 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. Both Bayer Advanced Grub Control and Bayer Advanced Grub Killer Plus are marketed to those battling with turf-destroying white grubs. Time for me to put down my grub control but in the process I found out some key important information. 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. 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. This time of year (late summer and fall), only curative products can be used to effectively control grub populations. Make sure to irrigate the lawn with at least. ... GrubEx or Dylox… Do not use products containing ONLY lambda-cyhalothrin, gamma-cyhalothrin, bifenthrin, deltamethrin, cyfluthrin or permethrin for grub control. Scotts GrubEx Grub Killer and Preventer . 1995. Make a regular practice of mowing your yard with the mower on the highest setting (3.5-4 inches). These active ingredients can be toxic to bees if the bees visit flowers that were recently sprayed. & grubGONE! 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. Active … Prevents lawn damage: use … This is a highly effective systemic insecticide that kills the target pests by both contact and ingestion. 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. I thought others may have the same question. How Late Can I Put Down Grub Control? Japanese beetles like to lay their eggs on irrigated turf like golf courses, athletic fields and highly maintained lawns. 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. 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 short-lived compounds that kill all life stages of grubs. This article was published by Michigan State University Extension. However, when applied in June or July they provide excellent protection against the next generation of grubs. vs. Dylox is one of the more potent and toxic insecticides, and it's not labeled for use on edibles. 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