The scoop looks very promising but in reality it's very cumbersome and quite useless. The trap door that is supposed to keep the scooped stuff in lets in a lot of litter when you scoop the second time. Unfortunately, I had to forego using this scoop and found other simpler ones much more effective.
It does not stay close with the plastic bag in it, when you push a little to collect sand, it falls apart. Not okay!