new jack russell terrier adoptee

Just rescued an all white JR. Adorable and the greatest
personality. Love him. Very trainable. Two problems. Barking and Hair.
I've never seen a dog shed like this before. I'm picking it out of mouth and
out of my food like crazy. Brushing is not doing a thing to calm it down. Do
most JR owners keep their dogs in the yard most of the day and crate when they
come inside for hair reasons or please give me some ideas. Also, bark
collars...to use or not to use? Any other ideas on how to get the constant