PRICES MAY VARY. ?? No Adhesive: Anti slip stair treads are perfect for indoor use only, can obviously secure your safety when you go up and down the stairs wothout destroy your stair floor, the bottom we created is waterproof rubber backed without no glue tape or permanent adhesive, so there won't be any residue when you remove the stair pads, and can fully prevent your family and pets from slipping, please be know that our rubber stair mats are not suitable for outdoor use. ?? Rubber…