a product called "Awesome". we first got it in Mexico and have found it in the U.S. in dollar stores. The label says, "NO ACID, NO AMMONIA, NO BLEACH, NON-FLAMMABLE". It's light yellow clear liquid that you can get in a concentrate or premixed. We try to get the concentrate.

I don't know what is in it, but I can tell you it's about the BEST cleaner we have ever used! AND, the cost is low compared to most of the other stuff.

Greg