I see this along the 'multi use paths' all the time. Some body's dog did their thing in the grass. The owner, being the consciencious person that he/she is, picks up the remnants, places it in a plastic bag, ties it tightly, and puts it lays it right back in the grass !
So we now have something that is 100% biodegradable, wrapped up in a plastic bag for the purpose of ______ ??