
From what we've found, the Bonide Wasp & Hornet Insect Killer works pretty well against yellow jackets, along with wasps and hornets. It's an oil-based spray that's designed to knock them down and kill them quickly. Plus, it sticks around to help prevent them from coming back.
This insect spray's active ingredients include Tetramethrin, Piperonyl Butoxide, and Permethrin, which the manufacturer says are great at acting fast when they come into contact with pests.
The can is meant for outdoor use, so you can spray under eaves, around screens, and near windows. A good thing about it is that you can use it from a distance—up to 20 feet away—so you're not getting too close to the nest.
According to our research, folks generally seem to agree that it works well, often clearing up their yellow jacket problems with one spray. There are a few mentions that sometimes a second spray might be needed to get rid of a nest completely, in case some bugs are tougher to kill.
For the best results, it might be better to use it early in the morning or late in the evening when the insects are less busy.
All in all, it seems like a solid option if you’re dealing with yellow jackets, though the results might differ a bit based on how you use it and where you are.
Where this comes from: This answer is based on ShopSavvy's product database, real-time pricing from 8 retailers, and a look at hundreds of user reviews to give you a well-rounded picture.
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