Doug writes
You could try that, but if the yellow jackets are nesting in a block void or other area, the fog would not kill all of the yellow jackets in the crawl space. The most effective way to kill yellow jackets is to use Tempo 1% dust and a hand duster. Even if they are just flying in and out of the screen or through a hole, if you dust the opening where they are going in and out sometimes that should be enough to kill them.
Answer last updated on: 08/04/2010
