I don't think I've ever felt the need to rave about a cleaning product, but this stuff is absolutely amazing! I keep going in the bathroom to look at the beautifully clean tile grout. To think we thought that we were going to have to spend £££ on re- grouting. Some elbow grease and a few goes with this and it's like new. I wish I'd taken before and after pictures. Seriously good stuff. I'm going to buy a few bottles in case it disappears.