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Nutrient Process

Adult Fly

Unlike its house fly relatives, the Black Soldier Fly (BSF) is known to be an environmentally-positive insect. Despite their insatiable appetite in the larval stage, BSF are a relatively innocuous species of native arthropod; they possess no functional mouth parts or stingers, and are harmless to humans, pets and wildlife. They are, however, notable at mitigating the presence of the common house fly and other filth bearing flies, which makes them a definite plus for use in the composting process. BSF larvae are voracious consumers of food scraps - decomposition via digestion can be measured in hours, rather than weeks or months, and wastes are reduced by up to 95% of their original weight and volume. BSF larvae are notably different than Redworms, because they will actively consume fresh scraps immediately without the need for pre-decomposition.


The BSF prepupae has a flatter body than those of other flies, which our nutrient processing system is specially designed to take advantage of. The BSF larvae are placed on top of a 1'x4' wide composite lumber trough, which contains Redworms, reduced black friable residue, and a stainless steel, cable-drawn system for harvesting the bottom layer of pure soil larvaand worm casing. The edges of the trough are sloped up at a 45 degree angle, with a gutter/pail collection system attached to the sides. When the larvae turn into prepupae, their natural tendency is to move up and away from the larvae still in the trough. While the edge angle is steep enough to prevent larvae from escaping, the flatter body of prepupae allows them to crawl out and fall into the gutter/pail collection system, from which they're gathered and allowed to mature. Should other filth-bearing flies lay their eggs in the trough, their rounder prepupae tend to roll back down the 45 degree slope, leaving them to be eaten by BSF larvae, ensuring that undesirable fly species are eliminated from the composting process.




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