Peter from Littleton, Co writes
I have thousands of wasps and hornets infesting a willow tree and as we have been unable to identify a nest ad traps and baits have been largely ineffective, we've turned to Onslaught. I mixed 1fl oz per gallon of water and sprayed the offending swarm with the mixture so wondering how long will it take to start seeing results or dead wasps?
Onslaught Insecticide is not an insecticide that offers fast knockdown so any pest sprayed with this product could potentially die within a window of approximately 72 hours. If you prefer to use a product that will provide quicker knockdown when yellow jackets area sprayed directly, then you can use PT Wasp Freeze II Aerosol. Please take a moment to review the How to Treat for Yellow Jackets Article located at the bottom of the Yellow Jacket Control Page.
Answer last updated on: 09/15/2021
