Dolphin Sealants Inc., the manufacturer of Hippo Patch, gladly accepts product returns within 30 days of the date of purchase. Please call to obtain a Return Authorization Number (RA#). Return shipping costs are the responsibility of the customer. Returned or exchanged items must be unused, undamaged, in resalable condition in original packaging to receive full credit. Customers may be assessed restocking fees, and/or cleaning fees based on the condition of the product. *Dolphin Sealants, LLC will refund postage due to shipping errors and/or defective products.