Exo Terra Cricket Pen Sponge Replacements (2 ct) – A pack of two replacement sponges for the Exo Terra Cricket Pen’s water dish. These foam inserts fit in the cricket watering tray to provide crickets with a safe water source (preventing them from drowning). Simply moisten the sponge to give feeder crickets or other insects access to water. Regularly replacing the sponge ensures a clean water supply and reduces bacterial growth. It’s an inexpensive way to keep feeder insects hydrated and healthy, which in turn provides more nutritious prey for your reptiles.