Hi Guys, I recently used some grout reviver to clean the grout in my shower cubicle. It came in a tube and was applied with a spongue head (too big for the line of grout). I left it on the tiles for a couple of hours, and now it is virtually impossible to remove the excess from the tiles themselves. My tiling is a real mess, I have used spongues, scrapers etc but am really struggling. I think part of the problem is that the shower tiles are not totally smooth (they are pitted). Surely there must be some chemical application that I can paint on to remove this gunk from the tiles? Any help from you members will be gratefully appreciated? Many thanks Emms xxxx 
