chewing clothes

I have a beautiful 6 month old ridgeback X Bull Arab. She was a rescue dog and we got her at 4 months old. All round she’s quite a well behaved dog but she constantly chews my roommates things. If she wears a pair of shoes, my dog will eat them, if she leaves her things in the lounge room, my...

This is actually a two-part question: First problem: under "things" I have a 13mo male Deerhead Chihuaua who constantly likes to chew my under "things". Usually my dirty underwear, but he'll settle for clean ones too. He also manages to find socks, and my daughter's tights. I don't...