1. The life cycle
House crickets go through incomplete metamorphosis: egg, then a series of nymph stages that look like small wingless adults, then a winged adult. There's no larva or pupa to manage.
| Stage | At 30–32 °C | What happens on the farm |
|---|---|---|
| Laying | 1–2 days per tray | Adult females lay into trays of moist peat or coir. Pull trays daily so every tray holds eggs of one age. |
| Egg | ~13 days | Trays go to a warm, humid incubator. Keep the substrate damp, never soggy. |
| Pinhead nymph | First 1–2 weeks | Tiny and fragile. Needs fine feed and a water source it can't drown in. |
| Growing nymph | ~45 days hatch to adult | The grow-out. Most feed is eaten here and most growth happens here. |
| Harvest | Weeks 8–10 from egg | Harvest around the last molt, before full adulthood. Adults grow wings, chirp, and convert feed less efficiently. |
| Breeders | A slice of each batch | Hold back a share of each batch as the next breeding group. Never breed from a batch that showed disease. |
Rule of thumb: think in weekly batches. Start a new egg tray every week and you harvest every week, which is what feeder customers and a subscription business need.
2. Climate
Temperature sets the pace of everything. The farming literature puts the sweet spot at 30–32 °C (86–90 °F) with 50–70% relative humidity. Cooler rooms still work but stretch the cycle and raise feed cost per pound.
- Heat: In cold climates, winter heating is a top-three cost. Insulate first: an insulated shipping container or a well-sealed room costs less to heat than extra heaters.
- Humidity: indoor air runs dry, especially in heated winter rooms. Egg trays and pinheads need extra humidity; grow-out bins need airflow so the bedding doesn't get damp and moldy.
- Air: dense crickets produce ammonia and CO₂. Exhaust fans on a timer plus a CO₂ or ammonia sensor keep the room safe for crickets and workers.
- Dark: crickets prefer dim light and hide in egg flats. Bright light isn't needed except for work.
3. Rooms, racks, and bins
The farm plan splits the building into rooms by job, so each can hold its own climate and nothing dirty flows back toward the eggs.
| Room | Job | Notes |
|---|---|---|
| Breeding | Adults lay eggs; trays incubate | Warmest, most humid, cleanest. Staff start the day here. |
| Grow-out | Nymphs grow to harvest | Racks of bins with stacked egg flats. Most of the floor space. |
| Processing | Kill step, blanching, drying, milling | A food room. Washable surfaces, handwash sink, no live insects. |
| Packaging | Weigh, seal, label, lot-code | Kept separate from raw processing. |
| Cold storage | Frozen whole crickets, finished goods | A chest freezer to start, a walk-in later. |
| Control & maintenance | PLC cabinet, HMI, feed storage, tools | Feed stored sealed and off the floor. |
Commercial farms stock around 6,000–12,000 crickets per square meter of bin floor, with egg flats stacked vertically to multiply the surface crickets can stand on. Start at the low end; crowding raises cannibalism and disease.
4. Feed and water
Feed quality is the difference between the headline efficiency and a dead batch. In a UC Davis trial, crickets on poultry feed converted it at 1.47 to 1, and on processed food waste at 1.91. On unprocessed food waste or straw, more than 99% died before reaching harvest size.
- Base feed: a milled grain feed at around 20–22% protein, such as a chick starter or a cricket chow. Grind fine for pinheads.
- Side streams: brewery grains and milling byproducts are tempting. Trial them on one bin, dried and consistent, before switching a room.
- Water: crickets drown in open dishes. Use water gel, soaked sponges, or drip lines into absorbent pads.
- Food rule: for human food, feed must be food-safe and traceable. Record feed lots against each batch.
5. Automation
The plan calls for PLC control of climate, feeding, watering, and eventually harvesting, built as identical modules that can be cloned like bioreactors. Automate what fails expensively first.
| Priority | What | Why |
|---|---|---|
| 1 | Temperature and humidity control with alarms | One cold night or a failed heater can wipe out a room. Text alerts pay for themselves the first time. |
| 2 | Data logging for every room and batch | Traceability for food safety, and the only way to learn what actually improves yield. |
| 3 | Ventilation on CO₂ or ammonia readings | Saves heat in winter by venting only when needed. |
| 4 | Timed watering lines | Watering is the most repetitive daily chore. |
| 5 | Feed hoppers and harvest shakers | Worth it at small-commercial scale, not at pilot scale. |
A small PLC, a touchscreen HMI, and cheap temperature, humidity, and CO₂ sensors cover steps 1–3 for one module. Design each room as a standard module with the same sensors and program, so a second room is a copy, not a new project.
6. Disease and biosecurity
Acheta domesticus densovirus (AdDV) is the named threat. Around 2009–2010 it caused mass die-offs across North American cricket farms, and researchers still list it as a relevant pathogen in commercial production. There is no treatment; the only defense is keeping it out and containing it fast.
- All in, all out: each bin holds one batch of one age. Empty, clean, and dry it before restocking.
- One-way flow: people and tools move from eggs to grow-out to processing, never back.
- Quarantine: new stock lives in a separate room for a full generation.
- Watch for: sluggish or paralyzed nymphs, swollen abdomens, sudden die-offs in one room. Pull and freeze samples for testing; molecular tests exist.
- Backup colony: keep a small breeding colony in a separate building or container. If a room crashes, the farm restarts from it.
7. Harvest and processing
- Purge: pull feed 12–24 hours before harvest, water only, so guts empty.
- Separate: shake egg flats into a bin or collection tube and screen out frass and debris.
- Chill and freeze: cool the crickets so they go dormant, then freeze at −20 °C or colder. This is the standard humane kill step, and frozen whole crickets can be stored at −20 to −80 °C.
- Blanch: boil 1–2 minutes, then ice bath. This is the main microbial kill step for food.
- Dry or roast: oven-dry, roast, or freeze-dry until brittle. Expect roughly a third of the fresh weight to remain.
- Mill: grind dried crickets to powder, sieve, and pack in moisture-proof bags with a lot code.
- Test: send each lot to a lab for moisture, water activity, and pathogens (Salmonella, E. coli, Listeria) until the process has a clean track record.
Frass
Frass is cricket droppings plus shed skins and bits of feed. It's rich in nitrogen and chitin and sells as a garden and greenhouse amendment. Screen it, dry it, and heat-treat it (the EU standard is 70 °C for one hour) before bagging, and register it with your state as a soil amendment before selling it.
Allergy labeling
Insects share an allergen, tropomyosin, with shrimp, crab, and dust mites. Every food and pet label should carry a clear note that people allergic to shellfish may react.
8. Licensing
There's no special insect license. Instead, each product falls under the rules for its category. Cottage food laws generally don't cover insect protein, so everything for people comes out of a licensed commercial space.
| Product | Who regulates | What it takes |
|---|---|---|
| Food (flour, roasted, snacks) | State health or agriculture department, plus FDA for interstate sales | Register as a wholesale food manufacturer with your state (fees vary). Register the facility with FDA if selling across state lines. Follow cGMP and write a HACCP-style food safety plan. |
| Pet treats and feed | State department of agriculture | Commercial feed registration, usually an annual company fee plus per-product and tonnage fees. Confirm the insect ingredient is acceptable for the species on the label. |
| Frass | State department of agriculture | Register as a soil amendment before sale; many states also require an annual distribution report. |
| Live feeders | USDA APHIS | House crickets ship between states in the continental US with no permit. Other species need one. |
| The building | City or county | Zoning for agricultural or light-industrial use, plus building and fire codes for heaters and electrical. |
Sources: your state's food, feed and fertilizer programs (requirements and fees vary by state), APHIS feeder insects. Check current rules before filing. Not legal advice.
Quick reference
- Climate: 30–32 °C, 50–70% RH, ventilated, dim.
- Timing: eggs ~13 days, hatch to adult ~45 days, harvest weeks 8–10 from egg, 8–10 cycles a year.
- Density: 6,000–12,000 per m² of bin floor, egg flats stacked.
- Feed: 20–22% protein grain feed; no raw scraps or straw.
- Biosecurity: all in, all out; one-way flow; quarantine; backup colony.
- Processing: purge 12–24 h, freeze at −20 °C, blanch 1–2 min, dry, mill, test.
Farming parameters from a 2025 house cricket farming review; feed trial from Lundy & Parrella (2015); densovirus from a 2025 house cricket review. Room layout and automation follow the project's business plan.