Astonish Cup Clean Coffee and Tea Stain Remover 350g 4 "Good product" Mr Evans 15 July 2019 Bought this product because Tea Away has been discontinued. I have used it as per pack instructions on two stainless steel flasks that had held black coffee and were heavily stained. Three hours later looked as though they hadn't been used. My only problem is with the pack. It is difficult to remove and replace the lid. When doing the latter the side started to collapse because to much pressure is required. Would have been five stars otherwise.