Trash Smell Buster Plastic Cover for Trash Cans Eliminates Odor, Totally Chemicals Free. Keeps Trash Cans and the environment around your House Clean and Dry. It works exactly like shower caps, but only for Trash Cans. The TSB fits around the trash can, Elastic Rubber Band keeps foul odor escaping from leaking trash bags. TSB is made from durable plastic material and typically lasts several months and is designed for outdoor and indoor Trash Cans for both single-family homes and townhomes.