A:Â Hello Stumped Too - That is a good question. It is not recommended that this item be used on a non-uniform surface such a painted wall. This item should only be used on tile, stainless steel (such as a kitchen sink), or a smooth shower surface. We hope this helps. - Kati
A:Â Hi Stumped - This plastic shower caddy can be easily mounted on any wall or hard surface in your shower to offer you space-efficient storage. You just simply push the suction cup towards the wall to secure the caddy. You can give us a call at: 800-440-0680 with any further questions. - Johnay