[carmen in nj]

I keep my heating pad in low and under half of the whelping box only, I keep the room temperature at 75 degrees all the time. I also keep a blaket over the whelping box to keep the warm in.I also keep an area rug under the whelping box to keep the cold from the floor to touch the bottom of the box.
here's a picture of my setup.
HTH,
Carmen in n