I am seeing the same issues with the bottom rails on the male side of the kennel. Some kennels make a wall a couple of concrete blocks high and sit the chain link on top of them. Another option might be to dip the lower fencing in a rubber coating to protect it.I would like to add something I think I've learned from using chain link kennels. The bottom piping always seems to rust pretty quick, when the sides and top last forever. Even when you have them raised a little off the ground. I replaced all of mine this spring. They are on concrete so every day when I hose them off I take a little extra time and spray off the bottom pipe. Seems like the male dogs love to pee on them. Maybe they will last longer.