Review on 🛀 Non-Slip Bathtub Mat - High-Quality Rubber Bath Mat for Tub & Shower, Ensuring Baby Safety, Ideal for Kids & Pets, Soft and Non-Skid - Bathroom Tub Mat, Beige, 16” x 28 by Amber Ramos

This mat works very well. Two things to note: 1. It "sticks" to the tub due to moisture-dependent suction. You should at least pour some water into the bare tub before putting the mat in to keep it in place properly. Otherwise everything slips. However, once it works like a charm.2. To keep it long-lasting without mold, take it out after each shower and let it dry. Given #1 you can still do it. As an added bonus, consider spraying the bathtub floor with a solution of water and white vinegar (or showering daily if you're just going to grab it off the local supermarket shelf) to keep it clean.