We too have just discovered mice in the loft. We found them downstairs first and they managed to chew through the food waste bin. We got rid of that and i plugged 3 holes in the kitchen which seemed to do the trick. Laid 3 traps, caught 2 mice and all seemed good. Fast forward a week and we heard some noise coming from the eaves. I didn’t possibly think it could be a mouse as it was quite noisy but the Mrs was getting paranoid so put 3 traps up loaded with peanut butter. Caught nothing on the first night but sure enough, caught one on the second.
Still trying to figure out how the little buggers are getting in the house in the first place. Been in the house for 3 years and not had this problem before. They sure are persistent but i’ll just have to find out exactly where they are getting in and stop that route of entry. Failing that i think a shotgun might suffice!!!