4 ounces will treat up to 20 gallons of tank capacity. Effectively controls odors and is environmentally safe. A special blend of biodegradable ingredients controls odors without formaldehyde, glutaraldehyde, quaternary salts or other harsh chemicals. Breaks down waste and tissue. Non-staining liquid formula combines powerful odor control and cleaners with a fresh scent.California Residents: WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov.
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