An increasing number of yellowjackets were flying in and out of a hole 12' up, between my soffit and windowframe. I talked to Donna at Pesticon on Thursday and made an appointment for 4 pm Friday. I said I'd be home earlier in case they had a cancellation, and on Friday she called and said Darrell could come at 2. He was right on time, observed social distancing, and answered all my questions. In one day another spot in my brick facade I'd noticed one or 2 yellowjackets exploring the day before had obviously turned into a second busy nest. Darrell explained the treatment and how it would work and when I could caulk. He answered all my questions and treated both nests. I have only seen one or 2 around since then. I would not hesitate to recommend Pesticon.