Anti-Slip Spray for Increased Grip on Fiberglass, Acrylic, Concrete and Tiles – Clear Non-Slip Coating for Shower, Bathtubs & Floors: Tub Non Slip Stickers: Amazon.com: Industrial & Scientific
HG Permanent Anti Slip - Aadvark Cleaning Company
HG permanent anti-slip - Tiles and Natural Stone - CleanStore
Anti-Slip Epoxy Spray for Wood, Vinyl & Laminate - SlipDoctors