Actually for my ducks, but - the pool is large, and easy to clean out. I dug a small pit under the pool, and I put the pool over the pit. The pit is smaller than the pool in diameter. There is a hole drilled in the center of the pool, with an ordinary white bathtub plug in it. Each day, just reach in there, pull out the plug, and the pool drains quickly. Rinse, then refill. Easy as 1 2 3!!
"Added a hole in the kiddy swimming pool, and put in a standard cork. The bottom I made a makeshift septic system. So you put out the plug, it drains, Spray it with a hose and let the ducks get back to playing." - Genius!