Oil Off is environmentally responsible above all else. Its formulation is readily-biodegradable according to the EPA's standards of biodegradability. It is non-flammable and a fire-retardant. This product is not listed as a carcinogen by the IARC, NTP or OSHA. Oil Off is completely water soluble and non-hazardous to humans. Note: The Code of Federal Regulations does not define the term “non-toxic” and we think it best to not make claims that cannot be defended. So we can legally say Oil Off is non-hazardous, safe for storage, safe for travel, and convenient for use even where there is no water. There is truly nothing like it. What’s even better, it’s made in the USA.