Went to Leslie's to restock on Muriatic acid, but instead of the usual stuff they only had so called "magic" muriatic acid, Pool Care | Buy Safer Muriatic Acid Here , which uses some special proprietary formula for the acid to produce less fumes and be safer to handle. I'm not particularly fond of putting anything 'proprietary' into the pool that does not list all additives. I have a salt water generator, I rarely use any other chemicals at all outside acid. It does however state to be safe for use in "drinking water treatment" which is somewhat comforting. Would be interested in hearing some experiences and option about the product.