Can you toilet train a cat?

There is a product called the Litter Kwitter that is supposed to be "guaranteed" to work. The videos are definitely amusing and like a previous post stated, it would be weird to have to wait for the cat to use the bathroom HA!

It does make sense and I would love to not ever have to clean a litter box! I think training older cats would be very difficult though because even my cats that I had, I couldn't even change the location of their boxes without them taking some sort of stand and just messing on the floor where their box used to be even after using it in the new location. Maybe mine were just awnry? :/