Frog Lube is a cutting edge biodegradable lubricant made from ?USDA Certified Food-Grade?. All ingredients are produced in the USA using a proprietary formula. It is a non-toxic substance that dissolves carbon on contact. It has a heavy specific gravity, which enables it to ?season? the metal by absorption deep into the pores. Using Frog Lube results in a durable dry slick wax-like surface that reduces friction, eliminates fouling, and destroys rust. Frog Lube is safe for plastic, urethane, nylon, and wood. Frog Lube will give your weapon many extended years of service. Frog Lube will not harm the environment..