Cooper learned to ring the bell within days.....he was pretty much potty trained when we added the bell. Same thing here, the door he goes to is out of sight so we had to come with a way to tell us he was at the door and it works great. Only bad part is he thinks the bell is his "anything I want bell"....dinner, I want to go play outside.....he hits it way harder when he means business for " I have to go NOW"
