Knock on wood, I have not found a nest on my property this year. Last year I had a large one in the wall of my bathroom and one in the stone wall around my pool. I had both taken care of professionally. Ladders and yellow jackets, not a combination I was going to take on....In years past, I have always waited until dusk, covered the hole with a window screen, then poured a combo of boiling water and Dawn dish soap. Shortly after, I would spray the hole with a eco friendly wasp spray. Never had issues after that. My neighbor has 2 large active nests that he is having someone take care of today. Bad year for the yellow jackets it seems....