The gel will likely work on smooth surfaces such as glass, stone tile, etc. However, it will not work well on uneven surfaces such as drywall. It's only a matter of time before it falls off if you just stick it to the drywall with the gel part. Now I get the ones using command bars. In the end it was just a waste of my time. Good thing they put it on something soft, otherwise it could have been remote controls.
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