carcinogen 1 4 dioxaneethylene oxide free tested in independent laboratory fragrance free hypoallergenic the safe natural way to remove unwanted odors from children39s environment naturally eliminates odors at the source co2 neutral septic tank safe not tested on animals 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