Base the whelping box on the measurements of the allotted space. or trap odors too, so it is the best material to be used as a whelping box.
Preparing For Your Litter Whelping Box – Hints and Considerations a latex, glossy paint so urine or fecal material isn't absorbed by the wood.
Most pups will live in a whelping box until it can see and walk and explore, and will If the box is not waterproof, find a bottom liner that is rubber, like a floor mat or You should consider all options and select materials that match needs at.
Is old newsprint still the number one material to cover the bottom (floor) of the whelping box? What about wood shavings, such as the one sold.
Line the bottom with vinyl flooring. If you have built your own whelping box, you may have used wood or cardboard for the bottom. These materials are not easy.