I did not belive it whe I was told to do it but I tried it and IT WORKS! hanf a no pest bran dfly strip in the top of the blind and put sevin dust under carpet / on the floor etc... every season before start o fthe seasonand no wasps, yello wjackets, spiders etc.... I dont fight them anymore for the last 5 years since I have been using this method.
I got the idea from the owner of the company who makes the BLYND. It is also on his website. Try it and you will be very happy!