Liner Cleaner 32 oz by Microbe-Lift. $14.99. Safely removes built-up organic debris and mineral deposits from pond liners, preformed ponds, and pond and plant containers. Uses biodegradable soy agents to clean vinyl, rubber, polyethylene and plastic surfaces without scratching them. No air polluting VOCs (volatile organic compounds) and safe for fish, animals, plants and humans. 32 oz. spray.