Review on Grip and Safety: Munchkin Bathtub Grippy Dots, 6 Count by Julie Brown

This is exactly what we needed. I used them on the bottom of a very slick flat slippery plastic baby bath tub. They work great and stick well. After each bath I take them out, rinse them and lay them out to dry completely to avoid mold growing on the suction cups (this happens with many bath rugs). Bath size you will need more than one pack (maybe 2 or 3) and they should be used on a very smooth surface. If the bottom of your tub is textured, they won't stick and slip under your feet.