We started our 3 y/o boy in real undies this week....has been going ok as we have been home and I put him on the toilet every hour. Still have him in a pull-up during sleeps and at night. Wondering what you guys do when going shopping or visiting? I'm a little hesitant in having him use a public toilet (I'm a real germ freak!!) but don't want to put nappies on him and confuse him. Are there any 'disposable' potties on the market or anything I could use over the public toilet?