Ideal for firearms, fishing reels and other precision mechanisms, Hoppes No. 9 Lubricating Oil contains fine and safe ingredients in the business. Their high-viscosity lubricating oils and moisture displacing lubricants are not only effective at cleaning and protecting, but also environmentally safe. Just because they are safe for the environment, does not mean they are safe for you. Please read the instructions and safety precautions before using; any contact with skin/eyes or ingestion is dangerous - be careful. Although cleaning your gun is a must, keeping your gun well-oiled is also crucial. Part of what makes Hoppes No. 9 Lubricating Oil special is its tough protection against extreme weather and harsh conditions. With this product, just a small drop can mean a big difference. A bottle of Hoppes can last for years, and since it does not expire, it is an investment worth every penny.