Do Eco-Max products contain Methylisothiazolinone preservative? 10 June 2020 18:04 Updated Eco-Max products do not contain Methylisothiazolinone ("MIT"). Related articles Do Eco-Max products contain phosphates? Do you have unscented or fragrance-free products? What are essential oils? What is the difference between Eco-Max Laundry Wash and Eco-Max Sport Detergents? What is the difference between "bio" and "non-bio" products?