I had a bit of an issue with a particularly persistent mouse a couple of years back (the little sod even set up his own twitter feed to taunt me – @hootsmon).
Humane trap baited with Mars bars – Fail
Sticky boards baited with Mars bars, jam and peanut butter – Fail. He managed to get himself off them, but we did find that out of the three he preferred jam.
Plastic head smasher type trap from B&Q with “Big Cheese” bait – Result. He managed to get out of the first one but the second one blew his brains out of his arse.
Still finding signs of his damage when we move furniture, but he’s gone along with the smell of mouse piss and the trails of crap that he would leave all over the house.
Get a trap. Kill it.