If they get in they have to get out somewhere otherwise they just buzz around all night. The plug ins and citronella things dont kill them, they are just a deterrent. We generally close the shutters, open the window a bit and close the curtains then they can escape. Spraying the rooms helps. I have citronella/lemon grass oil and dilute it when I get there in small bottles and spray literally everything, cupboards, window frames, bedding and even the wardrobes and have lemon joss sticks going all the time. The rooms smells like a lemony hippy den!
As for me... well, I just smother myself in marmite and garlic.... no one comes near me! Oh, and wrap myself up like a mummy in the sheet at night! What a palaver!
