Potty Training Prof. McGonagal

I'm oddly intrigued by this idea, mostly just to see if it really works.

Please indulge yourself in Mingus' Cat Toilet Training Program

The only problem is that Mona is extremely trained, do I really want to mess up a good thing? She did however, vomit all over the office for no apparent reason this morning. She's definitely seen me make it to the toilet, why can't give that a go?