Safely Deodorizes and Removes Stains. For live bait wells, bait buckets, fish boxes, ice chests, coolers, refrigerators and freezers. Cleans fish and bait stains, bloodstains and odors. Also removes mold, mildew and algae stains. Just mix this biodegradable powder with water, circulate the pump, or sponge on affected areas. Pump out, and then rinse with clean water. Leaves no residue or odor behind.