My recommendation:
I hope you can find this spray. It is flawless, starting to
dissolve insects/spiders/centipedes , etc. as soon as they are hit with a stream. I have actually seen legs begin to fall off centipedes I have chased-down.
Five years ago, a bunch of wasps (I think that's what they were) kept bugging
us as we would use our wooden deck at the rear of the house. I followed a couple as they flew under the deck and discovered a bunch of them headed for a grey wad of a nest (size of an apple) looking like masticated paper with individual entrances facing outward from the rear edge underside of the deck. I sprayed several while they were in-flight and sprayed the nest head-on, waiting for escaping residents to come at me. Got them, too.
I have not seen a single one of them since I hunted them down with:
TAT, "Power Jet Stream with Residual Action,"
made by: Chemisco, Division of United Industries Corporation (1-800-332-5553)
Flawless. Nothing escapes . Drops them immediately
while in flight. They can crawl but a few steps until the TAT, literally, stops them in their tracks. They seem to crumble away, at least partly, as they begin to lose legs.