I scoured craigslist before freezer camp time and was able to get 2 XL dog crates for 10.00. They needed a bit of repair (re-bending some of the wires). We put them in there. Next time though, I would go with the cardboard boxes. The dog crates were great for holding but as we went down the road, we had feathers and dust flying everywhere. We did put a tarp down, but they still managed to get poo outside the tarp. I think this time we will do cardboard boxes with air holes punched in 3/4 of the way up the box and then put a small sheet or tarp over the top. The dark might help to keep them calmer and also keep the dust down. I don't think the butcher cares how them come as long as they get there. We had a wonderful Amish family process ours and they were just happy that we brought them.