Twice we had wasps nests in the loft. We bought a can of stuff that you can spray from about 4 metres away, it comes out as a thin jet. Spray some on the nest and the wasps leave, it worked each time. (If you need the brand name I can probably find the tin.)
My mum had a nest in her loft last year and she phoned the council. They came out the next day and sprayed it and then removed it and she kept it to show us. It was fascinating. The council didn't charge her btw.
My mum had a nest in her loft last year and she phoned the council. They came out the next day and sprayed it and then removed it and she kept it to show us. It was fascinating. The council didn't charge her btw.