Astonish Cup Clean Coffee and Tea Stain Remover 350g 5 "Amazing product, shame about the packaging" Mrs Markwell 13 October 2020 I was on the verge of throwing our thermal cups in the bin as I thought they were beyond redemption. I saw this in the shop today and thought I would give it a go. Wow, am I glad I did. You could see it getting to work instantly and both cups looked like brand new. I only wish I had taken before and after pictures. If I have one negative it will be the same as other reviews, the lid is very loose and I would prefer it to have a tighter fit. But I can't argue with the product itself, it is amazing.