I have tried many different cleaners to clean my shower, all without making much impact. I'd been seeing ads for Koh and without expecting much I decided to give it a 'koh'. I am a convert! For the first time in 15 years I can see through my shower screen! I am honestly amazed! It has also cleaned my tiled backsplash without streaking which I'd given up on. I am so super stoked! I had to look up online how to use everything, because instructions were not included, but that was easy. I was so impressed that I bought the mop as well. And super fast delivery! To summarise, Koh has a new customer.