The kittens have all been inside but momma has just poked her head in so far. The access hole is larger than the one I made in the foam cooler so she may try it out later. If not, I will put her box back down outside the door.
I have added a windbreak over the door to cut the force of the wind. The cat shelter (my Mom says I can't call it a cathouse) sits on my porch in the same location as the cooler shelter. I have layered cardboard around the back and sides to cut the force of any wind also. That plus the foam insulation and the reflective sunblocker and the thick straw should provide a nice warm shelter for the cats.
I checked out the local shelter today but they are overflowing with kittens right now. Midnight (Dad's name for the smokey black kitten), Maude (my sister's name for the the dark tortoiseshell) and Callie (my name for the sweet light calico) will stay with me along with momma cat until they get good homes. The dogs are adapting, too.