RUST-BLOCK™ is a revolutionary water based rust inhibitor that works on all ferrous metals. RUST-BLOCK™ is ideal for home or shop use. Use it to protect your tools, auto parts, hardware, gardening gear and more. Also, it is ideal for industrial use. Non-corrosive, non-flammable and biodegradable. When you are ready to remove the invisible coating, simply rinse it away with warm water. Then, your item is ready to paint, primer or oil. . Protects from rust for up to 1 year Non-corrosive Non-flammable Economical Safe on skin Biodegradable No foul odors or strong fumes