I'm a stay at home mom so I'm able to be with Joey a lot. But when he was little I would take him outside to his spot, every hour and say Joey go potty. Now he is a year old and can pretty much go on comand. Never thought I would get that far. Just keep at it. Remember don't yell at your baby after the fact. They have no idea what is wrong. And I never put Joeys nose in the mess. Mainly because I kiss that mouth!!
Good Luck!