I am going on my 3rd season of dealing with wasp/yellow jacket (unsure exactly, but they are black and yellow)problem. They are somehow gaining access to my home. We have two dogs/doggie door and in 2 seasons it started with a nest being built above our back door (above doggie door) on the soffit board of our 2 story home. We removed the nest and sprayed it. 2 weeks later more were present in our home. We walked exterior of home and observed them flying around fireplace so we started a fire and they left. We also found some a nest in the entry porch of our home and treated. We are unsure if these are isolated nests or if they have built a nest somewhere in attic and traveling down into the home. Most exterminator services are telling us there is no preventative treatment for this they can only removed nests as found (which we are already doing on an ongoing basis).Im wondering if it is possible to apply drione dust to attic space and around exterior surfaces to resolve this issue.