How many times have you sprayed a wasp nest and they just fly away? My cousins own a lumber co. and said to try this, wow. Wasp's don't stand a chance and the wood borer bees go down if you get them with a good shot. I have never found anything to take down a wood borer other than a tennis racket. The only problem is the $6 for 16 oz. can. It is not available in many places but if you ever try I guarantee you will be pleased.