MB Stone Care - MB-2 Heavy Duty Stone, Tile & Grout Cleaner (1 Quart / 32 fl oz) (For Cleaning Concrete, Granite, Marble, Limestone, Travertine, Quartzite, Serpentine, Slate & Terrazzo)

I purchased this cleaner for one purpose only. My granite counter tops yellowed over the years. The cleaner promised deep cleaning and I was hoping it would get the yellow out. It did not. I'm sure this cleaner is fine for regular cleaning. I did not use it for that.