I first bought Koh when I saw it advertised on Facebook years ago. I bought it on a whim and then worried I'd been scammed - until I got the product and used it for the first time where I cried with joy (sad I know!). It worked so well and was so easy. I haven't bought any other cleaning product since. My glass cooker top is always sparkling clean and NOTHING works as well and as easy on the shower screen or our windows! My first box lasted ages (I'm not obsessive!) and I was worried when I came to buy more the company wouldn't be selling - happy to say Koh is still in existence. Long may they reign over all inferior cleaning products! No, I wasn't paid to write this review - just one very happy customer who wants others to be reassured it's a great product and you're not being scammed!!