Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Doesn't stick!

We needed more bath toys for my son, and requested this for his birthday. He loved it...until we tried to stick it to the tub. It simply doesn't stick! Our tub walls are completely smooth...no tiles or grout. Everything sticks to them nicely - except this product. Also, it's quite small. Makes a decent mirror for an infant to play with on the floor, but not for the task it's designed to do.