Check your neighbors. Some of them maybe unaware and using some bad pesticides. On that note check your state laws in my state use of a pesticide in a manner that has an adverse effect on the bees is against the law. We have a similar problem only I suspect it's our neighbors and it has cost us bats, swallows, lizards and night hawks. Now we get swarmed with katydids each year and the neighbor panic over it. When I was young and there were no neighbors there was no problem with any insects except the occasional yellow jacket and the fruit flies from the orchids which don't use pesticides.The sky in the day time was full of swallows, every other rock had a lizard or two and we have a lot of rocks. Then at dusk bats and nighthawks filled the sky and I mean hundreds of bats and several pairs of nighthawks. Now they are almost all gone and we got lots of bugs. I honestly do not understand why city folk move to the country and then turn it into the city with their pesticides and stupidity. What I need is a spray that repels city minded neighbors.