Don't remove all of the bark, but take a wash cloth and go the length of them a few times, back and forth, to remove the flaky stuff. Scald them in a tub of hot water or shower them with your hottest water. You want to make sure they don't start growing again, as well, so a nice soak in a bathtub full of steaming water from the tap will take care of that and any insect or mite pests.