Larval development should be assessed on a regular basis. Duration of larval development, larval mortality, size (weight) of fly larvae/pupae obtained at the end of biodegradation, and eclosion rates of adults are crucial parameters which can be used to monitor biodegradation process and indicate potential problems, e. g. low hatching rates of eggs, qualitative changes of waste fed to larvae (changes of its nutritional value, moisture content, possible contamination, etc.), infestation of pupae by parasitoids, or unfavorable environmental conditions (temperature, moisture, overcrowding). There should be conscious effort to improve these outcomes to develop more efficient rearing procedures for the larvae (Čičková et al., 2013).
Ensuring standard conditions for bioconversion as well as monitoring quality of final products (fly biomass and waste residue) should be mandatory for every biodegradation facility to ensure stable processing capacity and high quality and safety of the products (larvae and waste residue).