Help !!!

Hello everyone, Can someone please help me ? I have a one year old pit bull and he chews on my drywall and crown moldings. He goes outside during the day with the chihuahua and comes in for the night. I would like for the pit bull to stay outside. I have paid two different trainers to train the pit but the two didn't work.

I probably need a suggestion for a god dog run. l would have loved to of found a good trainer too.But they are hard to find. Smookey, Fontana, Ca. T

Thank you

Help !!!