Dry Skin Help!

I've never had problems with dry skin on any part of my body except my feet! I'm a college student, I work, and I have a family (married/kids) so I'm always on the go and it's rare that I have any extra money or down time to get myself pampered. So I was wondering if anyone had any home remedies for dry skin on your feet? I have flawless legs but I am always embarrassed by wearing sandals or anything that shoes my feet. I've used foot lotions, foot filers, and foot gels, vaseline, from Walmart but nothing seems to work. My feet are always dry, hard, and tough like I've been walking on rocks. My husband likes to try to rub my feet sometimes but I always keep socks on to keep him from touching or noticing how tough my feet are. I've always had this problem every since I was little and I want beautiful, soft, feet...so what do you use? I've heard that soaking your feet in Listerine pulls of dead skin but I've never tried it.