I had a problem with mice in my garage and once I caught them, even double- and triple-bagging them in Ziploc bags wasn't enough to keep the garbage can from stinking after a few days. One Sunday I found that I'd caught another victim but I wanted to mow the grass before deciding what to do with it, so I dumped the carcass under the tree out front, and went inside to change into my mowing clothes. I came out maybe 15 minutes later to find that the mouse was gone. This happened several times after that. I don't know what was finding them, but something was taking over the disposal for me. The mice were stiff when I dumped them out of the trap so I don't think that they were just stunned and recovered and ran away but I guess that's a possibility.