We needed a smaller bin as our large dual compartment one took up too much space. This is square and fits neatly in the corner and works a treat. We have noticed that users think they have to push a button but soon got used to the sensor action.
If we have one small criticism it is the power switch at the back. When the bin gets pushed back against the wall it turns off, then the lid won't open! [This review was collected as part of a promotion.]