Carcinogen 1,4-Dioxane Ethylene Oxide Free* Coriander Olive Scent 4 Hypoallergenic 1,4-Dioxane and ethylene oxide may be found as legally tolerated contaminants in household products. This Attitude product does not contain these by-products listed as carcinogenic to humans by the International Agency for Research on Cancer. EcoLogo: We do everything we can to offer you the greenest products in the world. The EcoLogo certification is proof of our environmental leadership. CO2 Neutral: Attitude is manufactured using 100% renewable energy and we plant trees to compensate our inevitable greenhouse gas emissions. This is how we contribute to the fight against climate change. Vegan product. Septic tank safe.