This document discusses research into mass producing the beneficial nematode Heterorhabditis bacteriaphora for agricultural use through solid state fermentation. The nematode lives in a mutualistic relationship with the bacterium Photorhabdus luminescens, which provides nutrients and stability requirements for the nematode's growth. The researchers scaled up production by increasing the surface area of the solid agar media inoculated with the bacteria, allowing for greater nematode yields. After harvesting, the nematodes were sanitized and stored. Preliminary results showed a 16-25 fold increase in nematode growth corresponding to increased media surface area, demonstrating the effectiveness of the solid state fermentation method for large scale production.