Why do I see wasps (and occasionally yellow jackets) indoors in the spring and fall?
Due to the climate in southwestern Pennsylvania, colonies of yellow jackets, wasps, hornets and bumble bees die in the fall – but before they do, their industrious focus is on the production of new queens, which in many instances can be considerable in number. It is these queens which seek out hibernation sites, and our properties offer very attractive conditions. Hence the reason that many homeowners find these insects indoors in the fall. In the spring, their appearance indoors reflects the queens emerging from hibernation. To combat this, homeowners can seek a specialized preventative control application in the fall designed to minimize these insects gaining access to the home.