Both of my females would not use the welping box but prefered my bed. I put blankets down over a plastic shower curtain for Mandy and then moved her to the welping box after the pups were all born. Krissy I moved after the first pup was born even though I knew she was in labor she got upset when I took her off the bed into the welping box.She went right back to my bed. I think it was a security thing. After the first puppy she was fine with the box.
Four litters and all started on my bed!
They loved the box later......