Guess Who's Coming to Dinner?

Looks like we've got a rat in the chicken coop. Actually, not in the coop itself, but in the other half of the shed where we keep the food. (the coop has wire mesh, concrete floors, and other barriers to keep critters out.) This alleged rat actually chewed through a plastic pitcher to get at the scratch. We'll have to keep it in a glass jar or something...and I'm wondering how long it will be before it chews through the plastic storage tub we've got their regular food in.