The Crabworx Drinking Pool is a decorative ornament for your Hermit Crab"s habitat. It is an ideal way to ensure that your hermit crabs have easy access to ample amounts of drinking water. Simply place one or two drinking sponges in the pool then add de-chlorinated fresh drinking water until a small amount of water remains in the pool. The Crabworx Drinking Pool and drinking sponges should be cleaned daily.