Setup

Before you start

Build the hardware first (5-gallon for one kitchen—even a cinder-block wedge stand is enough to start—or a modular stack for a hub). Read biology and tank design for shade, drainage, and moisture. Sorting habits live in waste stream.

• Shade and rain cover — open sides OK; keep midday sun and driving rain off the bed.
• Drainage — leachate must leave the bed; catch it separately from harvest bottles.
• Access — you will feed daily and lift modules; leave aisle space.

Seed a new bucket

You do not need a mail-order egg pack to expand. Plain cardboard (already useful as carbon for compost) is also a convenient material for seeding new buckets.

1. Wet food — a handful of soft wet organics (kitchen scraps, fruit trim). Meat scraps are fine and often the strongest attractant when trapping wild adults—not a flooded slurry.
2. Torn cardboard — a few pieces of plain corrugated cardboard, no plastic film, heavy coatings, or glossy print. Tear, don’t powder.
3. Bones left protruding (optional) — adults love dry bone surfaces sticking out of the bed as egg-laying sites; they are structure/lure more than larval food.
4. Active larvae (optional) — a few healthy larvae from an established bed if you have them. Not required: they mainly give off colony odors that help draw egg-laying adults. Food + cardboard alone works where wild BSF are present.

The cardboard is not the diet. It gives dry-ish edges and corrugation where adults like to lay—same idea as protruding bones. Under an open-sided roof where native black soldier flies can find the unit, that kit often draws fresh eggs and the new bucket starts without a distant supplier.

Use the same pack for the first bucket or for every spare rack module you commission later. Keep a small stash of clean tear-stock next to the tanks—another reason cardboard recycling pairs well with BSF (soil carbon + seed stock). Municipal programs: carbon processing.

Quick FAQ

Do I need larvae to start?

No. Food + torn cardboard is enough for adults to find and lay. Optional larvae are an attractant boost (smells of an active colony), not an inoculum you must have.

How many larvae if I use them?

A small handful is plenty—do not empty a working bed to fill a new one.

What cardboard?

Brown corrugated shipping boxes without wax, tape plastic, or food grease. Reject glossy print and plastic laminate.

No nearby colony and no wild flies yet?

Still set food + cardboard under shade and wait, or trade a few larvae with a local operator / registered community to speed attraction. Adults lay in dry cracks near wet food—not usually deep in the slurry.

When do I feed more?

When larvae are visibly working the first scraps (or eggs have hatched) and moisture looks like a damp sponge, not soup. Ramp to observed consumption—see capacity planning.

First week

• Check moisture daily; add dry carbon (torn cardboard or leaves) if the bed smells sour or looks waterlogged.
• Keep the harvest bottle on and the drain clear.
• Prefer small, frequent feeds over one dump that goes anaerobic.
• Sort at the kitchen so plastic and pits never reach the bed—waste stream.

Still expanding this guide

• Longer site-selection checklist (flood, neighbors, animals)
• Hand-off to full operations routines
• Cold-snap and restart playbooks (with troubleshooting)

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