Is Clorox® Automatic Toilet Bowl Cleaner1 safe for plumbing and septic systems?
A. Clorox® Automatic Toilet Bowl Cleaner1 will not harm plumbing or septic systems when used as recommended. Because sodium hypochlorite breaks down very rapidly, especially when it comes into contact with organic matter, the ingredients in Clorox® Automatic Toilet Bowl Cleaner1 won’t harm plumbing or septic systems. In fact, by the time the product reaches a septic system, it has essentially broken down into mostly salt and water.