🐛 How to Set Up a Giant Millipede Habitat

A giant millipede is a calm, slow-moving pet that's genuinely easy to look after, and the heart of its care is a deep, damp bed of substrate to burrow through. Get the substrate right and the rest falls into place.

Enclosure and substrate

Millipedes are gentle, slow burrowers, so they need a tank with a secure lid and plenty of depth to dig. Give them at least 4 to 6 inches of substrate, made from coconut fiber mixed with leaf litter and bits of rotting hardwood. This isn't just bedding — millipedes burrow through it and actually eat it, so it doubles as part of their diet. Add pieces of cork bark or wood on top as hides.

Humidity

Keeping the air moist is the most important daily detail. Millipedes breathe through the sides of their bodies and dry out easily, so mist the enclosure to around 70 to 80% humidity. The substrate should feel damp but not soggy — like a wrung-out sponge. If it ever looks or feels dry, give it a good misting.

Feeding and calcium

Beyond the rotting wood and leaf litter they munch as they burrow, offer fresh vegetables and fruit. Just as important, provide a source of calcium — a piece of cuttlebone or a small pinch of calcium powder — to keep their exoskeleton strong. Remove any uneaten fresh food before it spoils.

Temperature and placement

Millipedes are comfortable at normal room temperature, so special heating usually isn't needed. Keep the enclosure out of direct sun, which can overheat the tank and dry out the substrate far too quickly.

Handling and safety

Millipedes are among the most easygoing invertebrates to handle gently, and they're completely harmless — they don't bite. There is one thing to know: many species secrete a defensive fluid when they feel threatened that can irritate skin or leave a stain. It's nothing to fear, but always wash your hands after handling and don't rub your eyes in the meantime.

It's also worth clearing up a common mix-up: a millipede is not the same as a centipede. Centipedes are faster, more aggressive, and do bite. Millipedes are the slow, round-bodied, peaceable ones — the right match for a calm pet.

With good care, giant millipedes are long-lived, often lasting several years, which makes them a rewarding, gentle choice for supervised kids.

Quick setup checklist

• Tank with a secure lid and room to burrow
• 4 to 6 inches of coconut fiber, leaf litter, and rotting hardwood
• Cork bark or wood hides on top
• Mist to around 70-80% humidity; substrate damp, not soggy
• Fresh veggies and fruit, plus calcium (cuttlebone or a pinch of powder)
• Room temperature, out of direct sun
• Wash hands after gentle handling; don't rub your eyes

If a slow, gentle, hands-friendly pet sounds right for your family, you might also like our hissing cockroach guide and our picks for the best pets for kids — or take our free pet quiz to find your match.

🛒 Recommended supplies

Hand-picked gear for this guide. Affiliate links — we may earn a commission. The $/$$/$$$ badges are a rough budget guide, not live prices.

🧽 Cleaning & maintenance

Keep it simple and gentle. Remove uneaten food, dead feeders, and obvious waste every few days so mold and mites cannot take hold, and pull out any moldy substrate right away. Wipe the walls and rinse the water dish as needed, and do a full substrate change every few months (more often for humid setups). Skip chemical cleaners inside the enclosure — invertebrates are very sensitive to residues — and use just hot water, with a little vinegar for the glass. For humid species, good airflow and prompt waste removal are your best defense against mold.

Cleaning supplies for this habitat. Affiliate links — we may earn a commission. The $/$$/$$$ badges are a rough budget guide, not live prices.

⚠️ Common millipede setup mistakes

Already have one and something feels off? Start here. These catch almost everybody — none of them mean you have done badly, and every one of them is fixable.

My millipede has buried itself and won't come out — is it dead?

The mistake: Digging up a millipede that has buried itself.

A millipede that disappears for days or weeks is almost always molting, and it does that in a little chamber underground where its new shell is as soft as jelly. Uncovered halfway through, it can end up bent, missing legs, or dead.

Try this: Leave it alone. Keep the substrate damp, carry on as normal, and wait — several weeks underground is normal. If it can't vanish completely below the surface, add more substrate so it has somewhere to go.

Can I use potting soil in a millipede tank?

The mistake: Using potting soil or plain coco fiber alone.

Bagged potting mixes usually carry added fertilizer, perlite and wetting agents, and a millipede eats its bedding all day long. Plain coco fiber is the opposite problem — somewhere to burrow with nothing in it to eat.

Try this: Mix a couple of handfuls of dried hardwood leaves (oak, maple, beech) and crumbly rotten wood through the coco fiber, and top it up as it disappears. Collect from woodland away from roads and treated lawns and freeze it for three days first. Never cedar or pine bedding.

Why does my millipede tank dry out so fast?

The mistake: Running a full mesh lid with a heat mat.

A screen top lets damp air straight out and a heat mat bakes what's left. Millipedes breathe through tiny holes along their sides, so dry air is what harms them fastest — they curl up, go stiff and stop eating.

Try this: Cover most of the mesh with a sheet of glass, acrylic or plastic and leave a strip open for air. Turn the mat off — room temperature is what they want. If your room really is cold, run a low-watt mat on one side through a thermostat, never underneath.

Is it safe for my child to hold a giant millipede?

The mistake: Letting a young child hold one unsupervised.

Millipedes ooze a defensive liquid when they feel squeezed or startled. On hands it stains and can sting a little; in an eye it is much worse, and doctors have treated a run of small children with burns and swelling around the eye after handling one.

Try this: Under-sevens can stroke it with one finger while an adult holds it, then wash up straight away. Keep it away from faces, and don't let it be carried around the house. If any gets in an eye, rinse with plenty of clean water and call a doctor.

Can a millipede be hurt by being dropped?

The mistake: Handling it standing up over a hard floor.

They look armored, but the body wall dents and splits easily, and a fall onto a hard floor can do damage they never recover from. Most drops happen when someone stands up to show it to somebody else.

Try this: Sit on the floor, or kneel with your hands low over the open tank, and let it walk from palm to palm rather than gripping it. Keep sessions short, and skip handling altogether around a molt.

❓ Common questions

📚 Where this comes from

We check our care advice against vets, animal charities, and government health guidance. Here is what this page is built on.

Vets, charities & official guidance

• Millipedes (HYG-2067) — Ohio State University Extension
• Centipedes and millipedes — Oklahoma State University Extension
• Millipede burns in man — Trop Geogr Med, via PubMed

Keeper & species-community guides

• Giant Millipede caresheet — Amateur Entomologists' Society
• Giant millipede care — Tree of Life Exotic Pet Medical Center

Checked August 2026. These are other people’s websites, and none of it replaces your own vet — if a pet seems unwell, call one.