Guarantee:Guaranteed Tidy Lock Protection Locks Away Odors If for any reason you(')re not satisfied with Tidy Cats 24/7 Performance, just let us know why. Include your original receipt along with the original UPC from your 24/7 Performance package, brief explanation of why you were dissatisfied, and your name and address and send to: Tidy Cats Satisfaction Guarantee Office of Consumer Affairs P.O. Box 2530 Largo, FL 33779