Stay strong! I put this on my shower three days ago and it hasn't moved. The vacuum cleaner does its job, no complaints. However, I cannot confirm how this happens with glass doors. I mainly use this to not get rid of soapy water or mold in the shower. Absorbs most of the water from walls and tubs. Also, I haven't seen customer service with this product for a long time. They emailed with some tips on how to install the suction cup as well as some tips on how to keep it there. One tip was to turn the dial to the right until the suction becomes strong. Then dial again within the first half hour. I did it like this for the first few days and it seems to work. Just tap it in every time you shower and I can't imagine how it will ever fall off. I know it's only been 3 days but I'll let you know if this falls off my shower wall. The only downside to this product is that the product is advertised as stainless steel, which is mostly true. However, part of the dial is not made of stainless steel. It feels like some kind of plastic. I still don't regret buying this product. This can be good as it reduces weight.
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