My family is in KY so I'm familiar with the polar vortex and crazy winter you all had this past winter. It was ridiculously cold. I think like the other ladies have said, you'll have to start over with the basics. Darla seems to have a better memory than any other dog I've ever had. If she has a bad experience with something she remembers and wants nothing to do with it. She wiggled off my lap while I was sitting in the kitchen chair and landed on the hard floor. Scared the crap out of her and me. She will now no longer walk on the kitchen floor. I'm trying to teach her though that it's okay. I feel so bad, like I've scared her forever, I should have been more careful. I totally blame myself. Maybe before winter hits this year you could look into those fake patches of grass that they sale for dogs who go inside. That way it'll still be like going on the grass just without him having to get out in the cold to do it. Or maybe get one of those and have him pee inside from now on so you don't have to worry about getting him to go out.
check out this site, I'm thinking to order one for Darla just so she has the option of going inside or outside.
http://www.doggielawn.com/?gclid=CKi...FU5lfgod4rMATA