
I used to have the whelping box fully covered in vet bed whilst the puppies are small(with unprinted newspaper underneath), then half covered in vetbed with the other half covered with the paper when the puppies are pooing unaided by mum
I used to have at least 4 pieces that completely covered the whelping box(one clean, one in the box, one in the wash & one drying) & at least the same for the half cover.
I never kennelled any of my puppies so shavings were a no no