warning** not for the faint! Please don't get mad at me, either, I'm just stating the facts. I have not done this, but a friend uses cola soda pop. For real. The fizzier the better. I recall relatives doing this when I was a kid. Pour soda into a saucer or something small & shallow, place where the critter can find it & lap it up. Critter gets gas, can't relieve itself of the gas, &, um, well, pop goes the weasel, or rather mousie. Only trouble, I'm told, is when the critters' remains are odoriforous.