Review on 🛁 SANNO Super Strong Vacuum Suction Cup Soap Dish Holder – Bathroom Shower Soap Tray and Sponge Holder for Shower, Bathroom, Tub, and Kitchen Sink – Durable Stainless Steel Construction by Russell Ross

I have read many reviews where the suction power is lacking. Chinese instructions are computer translated. Here's what you do to install.1. Make sure you're sticking to a hard, smooth surface. 2 Place the cup on the suction cup and attach the knob ONLY ONE OR TWO turns (clockwise). 3 Remove the protective cover from the suction cup. 4 Press and hold the suction cup on a clean, smooth surface. 5 Keep pressing the suction cup with one hand and with the other hand turn the knob clockwise until it stops turning. This twisting motion pulls the center of the suction cup toward you, creating a powerful vacuum.