WaspGo

Why use WaspGo:
Wasps kill bees and just about any other insect they encounter. Some scientists point out that they kill many mosquitoes. That's right, but also spiders, so what's the net effect? There are concerns about the decline of insects. Wasps actually have no natural enemies and kill a lot of insects. And for people too, a wasp sting is annoying to say the least and for some even life-threatening. And in late summer they are downright aggressive, even if you sit still and do nothing. And they destroy crops of strawberries, grapes, etc.

That wasps kill bees was once the reason for my grandfather (a beekeeper) to start with the predecessor of WaspGo. Keeping wasps away was (and is) the goal. The significance of the Common Wasp and German Wasp that WaspGo helps against is negligible in terms of pollination. Bees are not. More on: waspgo.com
Want some proof: just look up: wasps kill bees.