Due to Federal regulations, ALL sales on DDSGadget.com for any and all products are FINAL and NON-REFUNDABLE. This includes all kits, instruments, restorative supplies, and all regenerative products, like grafts, membranes, sutures, dressings, mesh, or any other regenerative or restorative material we sell. There are NO exceptions. All of the items we sell are NON-RETURNABLE for Credit or Exchange due to FDA Regulations and Restrictions. Please make sure that you keep Biological Protocols in your office when storing any regenerative materials or any products that require specific storage requirements per the packaging.