how do they get in garage. check for openings... animals will search housing that is warm...check under the hood of the car for nesting materal, or right arund the garage, or if you have storage near the ceiling ,rafters.
Could be squirrels, We have one that can carry a whole stale bagel off te deck and across the yard and up a tree.
good luck..pls let us know.

Looks like you'll have to get a critter-cam.

I can hardly wait to hear who/what is taking your treats...

Maybe get a Have A Heart trap, it won't kill the animal. Then you can let it go somewhere far away.

I think I would borrow a wild life camera....I would love tho know what was getting them:)

Im checking with some friends to see if they have a trap that will cage the critter but not kill it! Strangest thing ever!!! Will keep you posted!