I've done some checking around and if you don't have these double boxes available, you can use single thickness boxes, especially if you can find two that are almost exactly the same size. Just put one inside the other, seal them, then put opening in other end. Even a box made with a single layer cardboard box filled with hay or straw is better than nothing when it comes down to it. If our temps keep going down, I'll be experimenting with making some single layer boxes or trying to double some boxes. I'll let you know how they work out. |