I know this post is a couple months old but my pool just got finished being built about 3 weeks ago and I have an issue with yellow jackets that has gotten progressively worse. At first it was a few here and there but now its 2-3 every 5 minutes during the day and it has made swimming in the very expensive new pool not possible as we have already been stung. I have tried adding borax and muriatic acid to bring the borates up to 50ppm to hopefully decrease surface tension so they could not land but that has not worked, they can still land. I cannot locate the hives, I've tried they are not on my property and I can only follow them so far, it seems there maybe multiple hives. I've tried luring them with baits to a different location, fake hives, etc all to no avail. I really think my best shot is to make it so they don't like the water. The local pool store has recommended Skillit and the companies web site even says it helps get rid of bees and wasps. After reading here for a while I am very wary of the local pool store. I'm really desperate any advice on trying skillit or another solution that may work?