I am most impressed with this product which in just one wash was able to completely eradicate all the skid marks and smeg stains that have been stowaways for several years in my one and only pair of Calvin Klein underpants. I refuse to buy another pair, since such stains are merely cosmetic, and do not therefore interrupt the funtionality of said pants. However, from an asthetic point of view, I would rather not have to worry about their presence, and my Vanish bar has put my mind well and truely at rest. I bought one for a friend who has anal seepage, and he reports similarly favourable results, which he presented in the form of a PowerPoint and graph. Very interesting stuff it was too. Well done Vanish, keep up the good work, and remember, it is people like us that put people like you where you are today.