Gallon Refill.  Mr. Floor’s Tile & Grout Cleaner Refill is specially formulated to properly clean tile and grout, and will prohibit harmful mold growth. This non-toxic product is perfectly balanced to clean and disinfect without breaking down the grout lining in between tiles, while it leaves a fresh clean scent.  As with all of our cleaning products it will not leave a residual film behind. This green product is environmentally safe and fully biodegradable.