 Although activated oxygen bleach is included in many powder detergents to digest and remove stains, it produces some chemical inactivation of bacteria, fungi and viruses.As a rule of thumb, powders and tablets normally contain an activated oxygen bleach, but liquids and all products (liquid or powder) used for "coloureds" do not.Surfactants also exert some chemical inactivation action against certain species although the extent of their action is not known.