Does anyone know how to get rid of wasps, preferrably in an eco-friendly way? Over the last couple of years I’ve had a colony in the roof that’s grown bigger and bigger, and they get into the flat through floor boards in the loft conversion, and when I open the windows. It’s a little early to see if they will be back this year, but I’m researching how to get rid of them if they do come back. Have been reading about the waspinator, but unsure if it does work, or if it’s just another gadget. There is no access to where I suspect the nest might be, and from what I understand, they build a new nest every year, often right next to the old one. Your suggestions welcome!