You have to do it Gulliver. A couple of years ago I noticed a mouse in my house. I wasn't too worried about it - it seemed so tiny and innofensive. Every now and then I'd see him race along the sides of the room. Then I started seeing more mice, and finding unpleasant evidence that they'd gotten into the cupboards. They climbed onto my kitchen table at night and got into the bread. I saw one run under an armchair, lifted it up and there was a pile of mouse crap and bits of dog food they had stolen. It was horrible. I got some humane traps but the mice were too smart for them - I only caught one. Finally I went out and got the regular traps, and caught nine mice in one day. Haven't had a problem since.