The little grey mouse that lived in my wall prospered for many days on nibbles of my lunch. I'd pack a meal before bed and, while I slept, he would take small bites of my lunch, which I left on the counter. He'd take a cracker crumble here, and a bread crumb there, but he wouldn't take too much and he'd always clean up after himself. Things were going quite well for him and I didn't even know he existed, until he got sloppy. One night while I slept, he ate all of my chips and left behind a big mess. When I awoke to this sight, I knew what had happened to my chips. So the next night when he returned for another snack, he found a nice, delicious piece of cheese... lightly balanced on a mouse trap. Now I don't have to share my chips anymore.