I recently moved into a townhouse. I'm finding roughly 2 wasps per week inside the house, and almost always they are found in the living room. There is a fireplace in the living room, and I believe they are coming in through the chimney flue of the fireplace. After suspecting this, I opened the flue cover one time, to see if there was any activity there, and a wasp came in. I think it's reasonable to assume this is where they are coming from. There does not seem to be any other place that they would be likely to come in through. I normally keep the cover to the flue closed, but there are 2 small gaps in the cover they could fly in through.
I have not used the fireplace since I moved in. The flue to this fireplace appears to be a metal duct. Would simply starting up a fire in the fireplace be a good way to solve this problem? If starting a fire isn't the solution, then what do you recommend?
Thanks,
J.