Product Guarantee: If you are dissatisfied with Fungi-Nail, please mail in a copy of the receipt along with proof of purchase (UPC barcode from the package). If you do not have a copy of the receipt or proof of purchase, please peel off the wrapper from the bottle and send back to Kramer Consumer Healthcare. If you do not have a receipt, Kramer will refund you the current Wal-Mart price. Please allow 4-6 weeks to receive your refund. Send to: 400 University Drive, Suite 400, Coral Gables, FL 33134