The first sign my Moses started chewing on my baseboards I starting to Pen train him and when he was out I kept my eye on him.
Of course when he was Pen trained he was just a wee little thing. I am sure that pen was big to him. This also helped me potty train him along with the crate. I bought him lots of Ropes and Chew toys and let him know what he could and couldn't chew on. I have never again had a problem with him chewing on anything. I guess I am lucky that I have such a good boy!
He can now roam the house all day and when I am not home and won't touch a thing but his toys.