The Exo Terra Cricket Pen Replacement Foam, model PT-2288, is designed to be used as a replacement foam insert for the water dish that comes with the Exo Terra Cricket Pen. The purpose of the foam insert is to prevent crickets from drowning in the water dish.
It is important to regularly replace the foam inserts to maintain a clean and hygienic environment for the crickets. When the foam insert becomes soiled or damaged, it should be replaced promptly to ensure the well-being of the crickets.