For those of you who use them, what's your method of cleaning them? We're just starting to potty train & I guess I can't decide how best to do it. I mean, obviously I dump the bowl contents into the big potty. Then do you wipe with TP or a Clorox type wipe or do you do the reverse or spray it down?? I just want to be sure we're doing it the most sanitary & efficient manner. It really is a process isn't it?!