Chemical Free Toilet Bowl Cleaner Toxic Dangers of Toilet Bowl Cleaners: The most acutely dangerous cleaning products are corrosive, acidic toilet bowl cleaners, according to Philip Dickey of the Washington Toxics Coalition. Corrosive chemicals can cause severe burns on eyes, skin and, if ingested, on the throat and esophagus. Ingredients with high acute toxicity like bleach and ammonia, produce fumes that are highly irritating to eyes, nose, throat and lungs, and should not be used by Read More