* Carcinogen 1,4-Dioxane/Ethylene Oxide Free * Tested by Independent Laboratory * Certified Eco-Friendly * Naturally Eliminates Odors at the Source * Vegan Product Industrial carcinogenic contaminants 1,4-dioxane and ethylene oxide are regularly found in fabric refreshers. This Attitude product does not contain these by-products listed as carcinogenic to humans by the State of California Proposition 65.