Why is Leland's family of electronic cleaning products so friendly toward the environment and the people who use them? We start off with all natural CO2, Carbon Dioxide, which is very pure and powerful. It is unusual that such strong cleaning products are also 100% safe for the environment and the people who use them. No CFCs, HCFCs, non-toxic, non-flammable, non-corrosive, no stains and no spots. Precision and purity are in all of our products.