| plastic trashcans with locking lids, or if you're really strapped for cash, a couple of bungees tightly wrapped across the lid of yoru metal trashcan should do the trick.   it may take a few ounces more effort to undo the bungees every time you wanna open it, but it'll keep pesky critters from ransacking it in the early a.m. 
				__________________My country is the world, and my religion is to do good.
 - Thomas Paine
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