I have used many different brands of stain remover on my boats over the years and this has worked the best. It was faster and required far fewer products to do the same job. I have generally had very good luck with the entire boat product line. I didn't use it in the shower. Just to remove a spot of rust from my GRP hull.
Sakura XSC T 3 Solidified Temperature Twist Up
4 Review
π€ Premium TotalBoat Aluminum Boat Paint: Specially Designed for Canoes, Plus an Array of Tapes, Adhesives & Sealants
8 Review
Rust-Oleum 318697 Rocksolid Polycuramine Garage Floor Coating, 6 Piece Set, Black
4 Review
TotalBoat Aluminum Canoe Paint: Enhance Your Canoe with Quality Coating
7 Review