We have 2 portable pens. One is for the chickens and one for the ducks. We put chicken wire on the first pen and then decided it was not protective enough so on the second pen we put hardware cloth which is much stronger. A couple of night ago I went out to check on them and there was a huge raccone in the front yard eating the outside cat food. I decided leaving cat food out at night for the stay cats had to stop. We then put stronger hardware cloth on the one pen we made with just chicken wire. Now my question is do we still leave the pens with chicken wire on the bottoms or should we also put heavier wire on the bottoms. They sit flat on the ground.