Discoid Roaches vs. Termites for Leopard Geckos: The Honest Verdict
I've fed a lot of leopard geckos over the years, and the question in this article's title comes up constantly: discoid roaches or termites? People read that wild geckos eat termites, see them framed online as a "natural" food, and wonder if they're missing a trick. Here's the honest answer up front, before all the detail: discoid roaches are the realistic staple. Termites are an interesting footnote you'll almost never actually use. The rest of this guide explains why — and, just as importantly, how to feed discoids correctly, because getting the supplementation and sizing right matters far more than which exotic feeder you chase.
Leopard geckos (Eublepharis macularius) are obligate insectivores. They don't eat plants, they don't eat pellets, and they're triggered by movement, so they need live prey. That means your whole job comes down to three things: pick a feeder you can reliably supply, fix its nutritional weak spots with supplements, and size and schedule it to the animal. Let's do all three.
What a leopard gecko's diet actually needs
Strip away the noise and a leopard gecko needs high protein, moderate fat, and — the part everyone underestimates — a heavy hand with calcium. These geckos are prone to metabolic bone disease (MBD), a debilitating, sometimes fatal condition caused by chronic calcium deficiency. Almost every feeder insect on earth is phosphorus-heavy and calcium-poor, so without supplementation you're slowly starving the gecko of the one mineral it can't do without.
Two levers fix that gap:
- Dusting. Toss the feeders in a calcium powder right before offering them. Calcium without D3 if your setup provides UVB; calcium with D3 on a schedule otherwise. This is the single most important habit in the whole guide.
- Gut-loading. Feed the feeder insects well — leafy greens, carrots, squash, a quality commercial gut-load — for 24–48 hours before they become a meal. What the roach eats becomes what your gecko eats.
Fat matters too, in the other direction. Leopard geckos store fat in their tails and obese easily, so high-fat feeders (waxworms, superworms) are treats, not staples. A good staple is high in protein, moderate in fat, and easy to digest. With that frame set, here's how the two headline feeders measure up.
Discoid roaches: the realistic staple
Discoid roaches (Blaberus discoidalis — not dubia, which is a different species often confused with them) are, in my experience, the closest thing to an ideal everyday feeder for leopard geckos. Here's the real nutritional picture, with the common errors corrected:
- Protein: ~20% as-fed — solidly high, good for growth, muscle, and recovery.
- Fat: ~6–7% — genuinely moderate, which is why they don't pack weight on a gecko the way superworms do.
- Moisture: ~60% — a good level of hydration baked into every meal.
- Low chitin, soft body — easy to digest and low impaction risk, which matters a lot for juveniles and any sick or recovering gecko.
You will read, including in the article this guide is based on, that discoids have a "favorable" or even "2:1" calcium-to-phosphorus ratio. That's wrong. Discoids are phosphorus-heavy with a poor Ca:P ratio, exactly like crickets, dubia, mealworms, and nearly every other feeder. There is no feeder roach that lets you skip calcium. You must dust discoids with a calcium supplement — gut-loading alone does not fix the ratio. I flag this hard because believing the "favorable ratio" myth is a direct route to MBD.
What makes discoids the workhorse isn't a magic nutrient profile — it's that they're practical:
- They don't climb smooth walls and can't fly. A plain feeding cup holds them. No escapees skittering across your floor.
- Low odor, no chirping. A night-and-day upgrade over crickets if the enclosure lives in your bedroom or office.
- They're tough and long-lived, so a tub of them keeps for weeks without mass die-off, and they tolerate being kept (75–85°F, moderate humidity, egg-flat hides) without drama.
- You can breed them at home. This is the real kicker. A discoid colony turns a recurring cost into a self-sustaining supply. They breed slower than dubia and demand warmth (mid-80s to 90°F) to reproduce, but once a colony is established it just runs.
When you need to start a colony or just keep a steady supply on hand, All Angles Creatures stocks healthy, well-started discoid roaches sized for both feeding off and seeding a breeding bin. If you want to go the colony route, I've written a full discoid roach keeping and breeding playbook that covers heat, humidity, and the 4–6 month ramp in detail.
The honest downsides: discoids can be pricier and less available than crickets or mealworms depending on where you live, adults run too large for juvenile geckos (use nymphs), and a few individual geckos just won't show interest. None of these is a dealbreaker — they're the trade you accept for a clean, quiet, digestible, breedable staple.
Termites: nutritious in theory, impractical in reality
Termites get romanticized because they're a soft-bodied, protein-rich insect that some wild lizards genuinely eat. On paper the profile is fine: high protein, fairly high fat, high moisture, soft body, eagerly taken. So why do I tell people to forget about them as a feeder? Because everything that matters outside the nutrition label works against them.
- They aren't farmed as a mainstream feeder. In North America there's essentially no commercial feeder-termite supply chain the way there is for crickets, roaches, and worms. You can't just order a reliable cup of them week after week.
- They're impractical to culture at scale. Termites live in complex colonies tied to wood and soil. Keeping a productive colony at home for feeding is a science project, not a feeder bin, and it won't produce the steady volume a growing gecko needs.
- They're tiny. Even when you have them, a single termite is micro-prey. You'd need a lot of them per meal, which only makes sense for hatchlings or very small species — not a realistic way to feed a grown leopard gecko.
- Wild collection is a genuine risk. Digging termites out of a stump or your yard exposes the gecko to pesticides, household chemicals, parasites, and pathogens. This is the same reason no responsible keeper feeds wild-caught insects generally.
- Their nutrition still needs balancing. They're lower in calcium and trace minerals, so even if you sourced them perfectly, you'd be dusting and rotating anyway — removing the one "it's natural so it must be complete" argument people lean on.
So the verdict on termites is clear and worth stating plainly: they're a natural part of some wild geckos' diets and an interesting curiosity, but not a realistic captive staple — or even a practical occasional treat — for the vast majority of keepers. If you ever do come across a clean, captive-sourced supply, they're harmless as a rare novelty for a small or young gecko. But don't build a feeding plan around them, and never feed wild-caught ones.
Discoids vs. termites at a glance
| Factor | Discoid roach | Termite |
|---|---|---|
| Protein | High (~20%) | High |
| Fat | Moderate (~6–7%) | Higher |
| Moisture | ~60% | High |
| Calcium / Ca:P | Poor — must dust | Poor — must dust |
| Digestibility | Soft, low chitin, easy | Soft, easy |
| Size | Nymphs to ~2" adults | Tiny (micro-prey) |
| Availability | Reliable from feeder suppliers | Effectively none commercially |
| Home breeding | Practical, self-sustaining | Impractical |
| Best role | Everyday staple | Niche curiosity at best |
The table makes the point the prose does: nutritionally they're in the same ballpark, but on every practical axis — supply, sizing, breeding, safety — discoids win decisively.
Supplementation: the part that actually prevents disease
Because both feeders are calcium-poor, your supplement routine is what keeps a gecko healthy. This is non-negotiable:
- Calcium dusting: lightly coat feeders at nearly every feeding for juveniles, and roughly every other feeding for adults.
- Vitamin D3: geckos need D3 to use calcium. If you run UVB lighting, use plain calcium most of the time; if you don't, use a calcium-with-D3 product on schedule. Don't double up D3 to the point of overdose.
- Multivitamin: a light dusting once or twice a week covers the trace vitamins and minerals that dusting calcium alone misses.
- A small dish of plain calcium in the enclosure lets the gecko self-regulate intake.
Do this consistently and you've eliminated the single most common serious diet-related illness in the species.
Feeding schedule and portions
Match frequency to age:
- Hatchlings / juveniles (under ~4 months): daily.
- Sub-adults (4–12 months): every other day.
- Adults (12+ months): two to three times a week.
Portion by size and time, not by a fixed count: offer a few appropriately sized discoids and let the gecko eat for 10–15 minutes, then remove stragglers so loose insects aren't roaming the enclosure overnight. As a rough guide, juveniles take several small feeders per session and adults a handful of medium ones — but the real rule is the eyes rule below, plus watching the gecko's body condition. A plump (not bulging) tail and visible fat pads mean you're on track; a thin tail means feed more, a ballooning belly means cut back.
The sizing rule that prevents impaction: no feeder should be longer than the space between the gecko's eyes. Use small discoid nymphs for juveniles and small geckos; medium nymphs to small adults for grown geckos. Full-grown adult discoids are too big for juveniles.
Common feeding mistakes to avoid
These are the errors I see sink otherwise well-kept geckos:
- Skipping calcium / believing the "good ratio" myth. Covered above, and worth repeating because it's the deadliest one. Dust. Every feeder is phosphorus-heavy.
- Feeding prey that's too large. Choking and impaction risk. Use the eyes rule.
- Single-feeder monotony. Even a great staple like discoids benefits from rotation. Work in variety — the occasional hornworm for hydration, silkworms or crickets for diversity — and keep treats like waxworms and superworms rare.
- Wild-caught insects. Pesticides and parasites. This is the core reason wild termites are a bad idea, and it applies to anything you catch outside.
- Overfeeding. Leopard geckos have a strong feeding response and obese easily. Stick to the age-based schedule and watch the tail.
- Ignoring gut-loading. Hungry, empty feeders are "empty calories." Feed them well 24–48 hours before they become a meal.
The bottom line
If you came here trying to decide between discoid roaches and termites, the decision is already made for you: run discoids as your staple, supplement with calcium religiously, size to the gecko's eyes, schedule by age, and rotate in variety. Termites are a fun bit of natural-history trivia and a fine rare novelty if you ever find a clean captive source — but they're not something to build a feeding plan around, and wild ones are a hazard. Get the discoid fundamentals right and you've got a gecko on a clean, reliable, healthy diet for years.
Want to go deeper? See my full discoid roach keeping and breeding playbook, or browse the complete exotic animal care library for more feeder and species guides. For the clinical side of calcium and MBD, the Merck Veterinary Manual's reptile nutrition section is a solid non-commercial reference.