I've been potty training my 5 month old with the food/play/potty routine and I still have to watch him like a hawk. I haven't gotten an expen because with all my 10 month old sons toys there is no room. I found if I put a loud windup clock next to his crate with a t-shirt or towel with my sent on it inside the crate he doesn't bark or whine. I wasn't able to get him house broken in the 7 days like the book, but he is doing alot better now. Good Luck
Sambo & Jenny