Townsend Duong (Stanford) replied to Nafees's post on Jun 7, 2008 at 5:41 PM Mice in Town can't steal your cheese. Mice can only steal cheese, gold and points in the Harbour, Mountain, or Laboratory. Mice in those locations might steal from you if your trap fails to catch them. That is why it is risky to go to those locations if your trap is not powerful enough. It is true that attracting more mice will probably result in getting things stolen from you more often, but that is because you have more opportunities to catch mice. Cheese effect changes the chances of your cheese going stale. If your trap does not attract any mice, then the cheese has a chance to go stale and be lost anyway. If your trap attracts a mouse, then that cheese has no chance to go stale. Positive cheese effect decreases the chance of cheese going stale. Negative cheese effect increases it. You can see your trap's overall cheese effect rating on the inventory screen.