The Complete Discoid Roach Care Guide: Housing, Feeding, and Breeding

I've kept discoid roaches as my main feeder colony for years, and they've spoiled me for every other feeder. They're quiet, odorless, can't climb out of a bin, can't fly off across the room, and breed steadily enough to feed a collection. Blaberus discoidalis is also legal in all 50 states, which is why it's the standard feeder roach in Florida where dubia are banned. Here's everything that goes into keeping a thriving colony.

Understanding discoid roaches

Discoid roaches are a cockroach species native to Central and South America, with flattened oval bodies and dark brown-to-black coloring. Adults reach up to about two inches. Their big selling points as feeders are behavioral: they're docile, they don't bite, and crucially they cannot climb smooth surfaces and can't sustain flight. That makes them about the most escape-proof feeder you can keep - a point worth stressing because some older guides wrongly call them "skilled climbers" and tell you to coat the bin walls with petroleum jelly. You don't need to. A smooth-walled bin with a ventilated lid is enough on its own.

Nutritionally they're a strong staple: around 20% protein and 65% moisture, with a soft enough body to digest easily. Like nearly all feeders they're phosphorus-heavy, so dust them with calcium before feeding.

Housing your colony

The enclosure

Use a sturdy, smooth-sided plastic bin or glass tank with a secure, well-ventilated lid. Give roughly 1 square foot of floor space per 50 adults - crowding stresses the colony. Because they can't climb smooth walls, containment is simple; just keep the rim clean and slick.

Temperature and humidity

Discoids are tropical. Aim for:

• ◆75-85°F for general maintenance.
• ◆85-95°F with 60-70% humidity to drive active breeding.

Use a thermometer and hygrometer, and provide gentle heat (a heat mat on the side, not under the whole bin) if your room runs cool. They slow dramatically when cold.

Substrate and hides

A layer of coconut fiber holds humidity and lets them burrow. Pack the bin with vertical hides - stacked cardboard egg flats are the standard - to multiply usable surface area and give the colony security. More hide space means a denser, calmer, more productive colony.

Ventilation and cleaning

Good airflow prevents stale air and mold. Spot-clean uneaten food and dead roaches regularly, and do a fuller substrate refresh every several weeks. A clean bin is an odorless bin - discoids only smell when neglected.

Feeding and gut-loading

Discoids are omnivores and thrive on variety:

• ◆Dry base: a quality roach chow, oats, cereals, or grain - left available at all times.
• ◆Fresh produce: carrots, squash, leafy greens, apple, potato - for nutrition and moisture.
• ◆Water: a water gel or shallow dish with absorbent material so nymphs don't drown.

Avoid heavily processed, salty, or toxic foods. In the day or two before you feed roaches to your pets, gut-load them on nutrient-dense produce so they pass that value along - and dust with calcium at feeding time to offset their phosphorus-heavy profile.

Breeding a self-sustaining colony

This is where discoids earn their keep: a healthy colony feeds itself indefinitely.

• ◆Reproduction: females are ovoviviparous - they carry eggs internally and give live birth. Gestation is around 60 days, with roughly 25-40 nymphs per litter.
• ◆Conditions: keep it warm (85-95°F) and humid (60-70%) with plenty of food and hides to encourage steady reproduction.
• ◆Patience: nymphs take about 4-6 months to mature. Discoids breed more slowly than dubia, so resist harvesting heavily until the colony is established - start with enough adults and let it build for a few months before relying on it.

Health and maintenance

Discoids are hardy, but watch for:

• ◆Mite outbreaks - usually from excess moisture or rotting food. Clean thoroughly, cut back wet produce, and improve ventilation.
• ◆Mold - same cause; keep the bin clean and not waterlogged.
• ◆Lethargy or die-off - check temperature, humidity, and overcrowding.

Steady warmth, a clean bin, varied food, and not overcrowding will keep a colony healthy for years.

Handling and safety

Discoids are docile and don't bite. Scoop them with cupped hands or a cup rather than pinching, and wash your hands before and after handling, as you would with any feeder insect - basic hygiene, nothing more. Since they can't climb smooth walls or fly, the occasional escapee is easy to recover and won't establish in your home.

Why they're my default feeder

Quiet, clean, escape-proof, nutritious, legal everywhere, and self-replenishing - discoid roaches solve most of the headaches that come with crickets and the legal problems that come with dubia. Set up one good bin, keep it warm and clean, and you've got a feeder supply that quietly takes care of itself.

Compare them head-to-head in discoid roaches vs. dubia, and see how to buy quality discoid roaches online. Start or restock a colony with discoid roaches from All Angles Creatures.