Kiddie Pool Whelping Box Setups. I have an inside whelping pen/kennel for my bassets. Linoleum flooring, good lighting, heat if needed, ac if needed, good access to fenced yard, plenty of privacy if needed.
Personally, i don't like to see people use plastic pools. It is a place for your dog to have her puppies comfortable without any danger. I have an inside whelping pen/kennel for my bassets.