I've tried using pallets for compost bins, but the chickens scratch it all out as soon as I put it in. Any suggestions to keep it contained while still allowing them access?
Attach some kind of fencing to the inside of the bin. Chicken wire, but if holes are larger, maybe double layer. Maybe some kind of HWC. Just reduce the size of the openings. Oh, and put a lip on the front of the bin - ours is about 20+" high, but any lip will help.