It looks interesting but I learned the hard way not to order anything off TV. If you order that you'll be calling your credit card company negotiating charges that you had nothing to do with
I know that's not what you asked - but...
Now, back to the actual gadget - it does look like it would be useful. I'll have to look at the video to see how easy it is to clean. I'm also wary of things like this that run on batteries. When they start losing power it can be a pain!