To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Seemed like a good idea, but will not stay on wall when in use with 2 bars of soap in it - fell off during the night!! We have no more sticky disks so it is now useless!! We read and followed installation directions.