Twinkle Toes Foot Powder is a very effective product, just sprinkle powder into shoes each day for 7 days and your feet will remain odourless and perspiration free for up to 6 months. (If for any reason you are not happy with these products, please send it back within 7 days upon receiving your product and you will receive a full refund.) Purchaser pays return postage. As you can see by my feedback everybody I have dealt with are very happy. Thank you.