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 Eco-Max Hypoallergenic or Fragrance-Free products have any kind of smell? Do you have unscented or fragrance-free products? What is the difference between Eco-Max Laundry Wash and Eco-Max Sport Detergents? What are essential oils?