Refresh Head And Tank Deodorizer

A fresh, green way to kill odors in your head compartment and holding tank without harmful chemicals. Just pour 1 oz. in head and flush with 1 or 2 quarts of fresh or salt water. Economical - 1 bottle of ReFresh Marine Head Tank Deodorizer fully treats your holding tank 16 TIMES (20 Ga / 75 L.) Non-Toxic – Naturally Green – Water Based – Biodegradable 1 oz. per 20 gallons kills odors without chemicals up to 4 months Not a cover-up fragrance Safe for either Marelon® or bronze plumbing systems Starts working immediately on liquids and solids Replace after tank discharge