The general rule is: if it's wet, keep it dry; if it's dry, keep it moist.

Vaseline should work fine. Or you could also try Bag Balm, available at pet stores, WalMart, etc. Orginally developed for cow udders, it is now used on lots of things and even appears inbthe human aisles! Google "bag balm" for more info re what it is.

You are so good adopting these two and helping them get back into shape!