Campa Chem Holding Tank Deodorant is an essential tool for RVs and campers. Use it to help keep your tanks clean and well maintained. It is 100 percent biodegradable, making it environmentally friendly. This liquid breaks down waste that can build up in tanks over time, and also keeps odors controlled. It works in all weather and leaves a fresh, potpourri fragrance behind. This package contains a 6-pack of liquid deodorant. It is suitable for use with a variety of holding tanks.