The clay substrate that is offered is enriched with extra calcium. This extra calcium helps with froglet success in many species, especially Pumilio and other egg feeders. It also has shown good results when used with the adult frogs. This substrate is similar to what you would find in the rain forest where many of these frogs are found. Below are the full directions.
Clay Substrate Directions:
The clay substrate must be placed in its final location before being moistened and used with frogs. Once the clay has been moistened, it is very difficult to move without ending up with a big ball of clay. Plant plugs can be placed in the clay right before moistening, and clay may be used on top of ABG. The cubes allow for root growth and drainage.