![]() ![]() Research trials are ongoing to evaluate the best application method, active ingredients, how much insecticide is needed to kill SLF, and how long the insecticide application will last. We recommend the use of systemic insecticides for adult SLF control only in high-population areas and high-value trees. These are our current best recommendations for management tactic timing, but not all combinations of active ingredient, timing, application methods, and tree species have been tested. Read each label carefully and apply according to the label directions. Note: This is a guide for when to use management tactics to manage SLF. *Some trees are sensitive to horticultural spray oil. Always apply insecticides after bloom is finished to help protect natural enemies and pollinators. If systemic insecticides are not used, frequent use of contact insecticides may be needed to control SLF for the entire season. Toxicity to mammals can be determined from the LD50 values found on the Safety Data Sheet (SDS) for each product, and toxicity to birds, fish, and bees can be found in the table below. We recommend trying the least toxic options first. Efficacy, residual activity, and toxicity vary between products. Many commonly available insecticides that kill insects on contact are effective against SLF. ![]() However, for egg masses that are within a reachable area, smashing or scraping the egg masses will provide greater efficacy than the ovicides currently available. The use of oils provides not only a safe, environmentally friendly option but also provides control to some egg masses that are not accessible for physical removal or smashing. Oils, when applied at the correct time and with good coverage, can offer some control of egg masses and have very little non-target effects. The only plant-based oil, soybean oil, had similar control of SLF egg masses when applied at a 50% concentration. One of the most important parts to getting effective control is to make sure you have good coverage and apply the oil solution directly to the egg masses. When oils were applied at a solution of at least 3 percent, they were effective in killing up to 75 percent of treated eggs. Many of these oils are also available to residents at local garden centers. Although many synthetic insecticides were tested against SLF eggs, the most effective products tested were paraffinic and/or mineral oils such as JMS Stylet oil, Damoil and Lesco Horticultural oil, commonly used in fruit systems as insecticides to control soft bodied insects. All studies were done on intact egg masses (with covering) between February and April. Photo Heather Leach.īased on studies done in 20, our results suggest some insecticides have ovicidal action against SLF eggs. Variations in spotted lanternfly egg masses including color (yellow, gray, brown) and covering. Spotted Lanternfly Informational Handout (Spanish) Spotted Lanternfly Informational Handout (English) Visit for more information about permits. Comply with Permitting: Businesses must have permits to move equipment and goods.Remove Host Trees: Spotted lanternflies prefer the ailanthus tree, also known as “Tree of Heaven.” Try to remove trees from the business property to avoid attracting spotted lanternfly.Scrape egg masses into a plastic bag and place in trash. Remove and Destroy Pests: Crush nymphs and adult insects.If possible, try to park 15 feet away from trees. When parked, make sure to keep windows closed. Park with Windows Closed: The spotted lanternfly and its nymphs can enter vehicles unsuspectedly.Inspect incoming goods for egg masses and insects. Inspect Items Being Moved: Check shipping containers, propane tanks, pallets and other items being stored outdoors before they are moved off-site.If found, destroy any eggs or insects you find. ![]() Check doors, sides, bumpers, wheel wells, grills, and roofs.
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