Here's what I told my daughter in law before she and my son got married: If I offer an opinion that she doesn't agree with, she should say, "Oh, that's very interesting. I'll give that some thought," or "that's one way to look at it--maybe I'll give that a try." Maybe that will work! (Or maybe it's just an interesting idea, that you'll try....haha!)
Seriously though, Snoopy is 11 months old, and I would have to say that he's only been reliably potty trained for the last month. It might take a while, but it'll happen.