throw them where you won't walk. You can enforce that by making some sort of thingy for it. Use the 1x1 wood walls to make a little box, a roof tile or slanted beams to guide something you throw to fall in a good place, whatever you like. All it has to do is land where they can eat it -- you can make a plinko board or whatever to get it there.

It might be nice to have a prefab part for it eventually. Maybe run off moder tears.