Review title is Slippery, poor product design…. Not worth the cost savings over the Crest 3-D strips [SEP] I don't know why I try these after trying and loving the Crest 3-D strips, but it was a big mistake. These don't stick properly, they slide around, they're loaded with some gel intended to make them taste pleasant which I don't like either. In general interest seems like really poor product design… I would definitely pay a little more for the crest 3-D strips over these, I may even throw away the rest of my box, grrr.