Usable by modification

To make a long story short, the regular price (18) is a usury. The offer price of 12 is to my mind is still too high but I finally slammed shut.
When you first try has been shown that it cleans perfectly. I know nothing better for rounded corners.

The problem however, is that the cleaning part is not swimming, so as is the case with most competitors, but as a stone sinks. With the known consequences ... scratch the glass. You also need to remove the lid and fish out the cleaning part.

So I thought to myself and do not have a piece of Styrofoam glued to the backside of the inner part. See video and pictures.
Now the system works perfectly, just as it was supposed to be delivered from the factory.