Amazon.com.au:Customer reviews: Wekity Wall-Mounted Toothbrush Holder Portable Multi-Function Portable Toothbrush Cup Set for Home, Also for Outdoor Travel, Waterproof Strong Traceless Sticker - No Drill or Nail Needed White
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It's a little overpriced, but suits my needs perfectly. It adheres to the bathtub wall with no problem whatsoever (it comes with a small square, clear adhesion pad) and helps to stop knocking things into the tub. Wish I woud've ordered it sooner.