I found the only way to potty train my baby was to crate and pen train. Finally he got it. Now that he is 3 I no longer have to crate at all. He acutally has use of the full house. It took almost 2 years of hard work to get to that point. But now he is just a good little boy. He only chews on his toys and knows he must potty outside.
Once your baby gets used to his crate it will be his/her safe haven.
Good Luck!