Product Features * Non-toxic to humans, animals and the environment * Eliminates odors * Gel will dissipate over time, replace when low * Completely biodegradable Product Description Fresh Wave Pets Gel Crystals are ideal for eliminating odor from areas prone to constant smells. This is the refill size of the popular 16 oz Gel Crystals. Fill several small containers and set where needed throughout the house. Fresh Wave Pets Gel Crystals are gentle on your pet and the environment!