My baby ducks are so messy! We have a brooder box set up in the garage but I'm worried that it's still to cold so I had them in a box inside. They soaked the box within 24 hours. So, I had the brainy idea of putting them in the garden tub, that we never use. I put the water right on top of the drain, so anything that splashes out will go right down the drain. At the other end of the tub I put down old towels for bedding. I figure this way I can just wash them when soiled. Is it ok that they don't have a natural bedding like shavings or hay?