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I bought one of these traps they can get into but can't navigate back out and filled it with water, sugar, a little vinegar (I think just to keep...

See https://drkilligans.com/blogs/insects/how-to-get-rid-of-wasps-with-diatomaceous-earth I've had luck with Diatomaceous Earth in cases where...

You should be raiding yellow jacket nests as soon as you see them. Fuckers are bastards and they kill the spiders which can help keep mosquito...