quality guarantee if you are not 100% satisfied, return our product for a full refund. Scan here for more information To change refill: Unscrew pole with counter-clockwise motion and pull out of mop. Slide sponge head out of sponge grips. To reinstall, slide new sponge in between sponge grips, insert pole back into the mop, and screw pole in with clockwise motion. © TOPCO BHPA0718