Worked very well for me
This cleaner actually worked better than I expected.  We had a new slab of bluestone in front of our fireplace and I realized the flooring people had gotten some type of glue or filler on it.  I could not remove it with soap.  But after applying this cleaner and leaving it on for 5-10 minutes,it actually made it so I could scrub off the stains with a scrub brush.  There was no trace of the previous stains.<br />I also used it on my limestone table and it looks much better.  ALthough it did not take off some rings from glasses so it make take more than cleaner for that.
Rating: 4 stars