Hand crafted in small batches to ensure superior consistency and quality control. Our soil conditioner is fine-screened, with generous helpings of earthworm castings, bat guano and beneficial microbes. Happy Frog? Soil Conditioner is inoculated with naturally occurring mycorrhizal fungi that dramatically expand root development enabling plants to feed more aggressively. Add Happy Frog? Soil Conditioner to existing garden soil to increase aeration, improve soil drainage and break up clay.