Best Leopard Gecko Food (2026): Top Feeder Insects Ranked

Leopard geckos are strict insectivores. No fruit, no vegetables, no commercial powder diets — just live feeder insects, properly supplemented. Getting the diet right is the single most important husbandry decision you make for a captive leopard gecko.

The problem: not all feeder insects are equal. Nutritional profiles vary dramatically between species. Ca:P ratios differ by a factor of 10. The wrong staple feeder leads directly to obesity, deficiency, and reduced lifespan. We analyzed data from ReptiFiles, Zen Habitats, and PetMD to rank the 7 best leopard gecko foods by nutrition, ease of keeping, and real-world value.

For complete supplement protocols to pair with these feeders, see our best leopard gecko supplements guide. For feeder insect sourcing by species, see our best leopard gecko insects guide.

Quick Comparison Table

| Dubia Roaches | 1:3 | ~54% | Best Staple | $15–$25 |

| Black Soldier Fly Larvae | 1.5:1 | ~42% | Best Calcium | $10–$18 |

| Crickets | 1:9 | ~65% | Budget Staple | $5–$10 |

| Mealworms | 1:7 | ~53% | Easy Rotation | $5–$10 |

| Hornworms | 1:3 | ~9% | Treat / Hydration | $15–$20 (12ct) |

| Silkworms | 1:2 | ~64% | Premium Rotation | $20–$30 (25ct) |

| Arcadia Supplement Combo | — | — | Best Supplement | $25–$35 |

Detailed Reviews

1. Dubia Roaches — Best Staple Feeder

Dubia roaches are the closest thing to a perfect leopard gecko staple feeder. They offer roughly 54% protein and 28% fat on a dry matter basis — a more balanced ratio than crickets or mealworms. Their thick, segmented bodies hold gut-load feed longer, meaning more secondary nutrition transfers to your gecko at feeding time.

Containment is effortless. Dubias cannot climb smooth glass or plastic, cannot jump, and are completely silent. Escaped dubias die within days in a dry home environment. For keepers managing multiple geckos, a home colony is straightforward to establish. It delivers an unlimited feeder supply at minimal ongoing cost.

The one legal caveat: dubia roaches are illegal to possess in Florida and Hawaii due to invasive species concerns. Check your state regulations before ordering. For all other US states, dubias are the first feeder we recommend.

Pro Tip: Size dubias to no wider than the space between your gecko's eyes. For most adult leopard geckos, medium dubias (3/4 inch) are the correct size. Oversized feeders can cause regurgitation and stress.

Pros: Highest protein-to-fat balance of common feeders; silent and escape-proof; excellent gut-load host; breedable at home

Cons: Illegal in FL and HI; some geckos need conditioning to accept them; higher upfront cost for small quantities

2. Black Soldier Fly Larvae — Best Natural Calcium

Black soldier fly larvae (BSFL) — sold as Nutrigrubs, Phoenix Worms, and Calci-Worms — are the only feeder insect with a naturally correct calcium-to-phosphorus ratio. Crickets and mealworms run 1:9 Ca:P and require heavy dusting at every feeding. BSFL deliver a 1.5:1 Ca:P ratio straight from the container — no dusting needed.

According to Zen Habitats, BSFL are one of the most nutritionally complete single feeders available for insectivorous reptiles. They also contain high concentrations of lauric acid, a medium-chain fatty acid with documented immune-supporting properties. Their soft, small bodies make them ideal for leopard gecko juveniles and adults with dental sensitivity.

Use BSFL in rotation with dubias or crickets. They are not quite large enough to satisfy bigger adult geckos on their own. Their higher moisture content also means they spoil faster than dubia roaches in warm conditions.

Pros: Natural 1.5:1 Ca:P — no dusting required; lauric acid immune support; soft body for easy digestion; no gut-load or special storage needed

Cons: Smaller than dubias; spoil faster; premium cost per unit versus crickets

3. Crickets — Best Budget Feeder

Crickets are the most accessible leopard gecko feeder and are accepted by virtually every gecko — including picky individuals that refuse dubias. At $5–$10 per 100 count, they offer the lowest per-insect cost of any common feeder.

The strong movement stimulation from live crickets also triggers powerful hunting behavior. This enrichment value is real: leopard geckos that hunt actively show fewer signs of boredom-related behaviors like glass surfing and pacing. For keepers focused on behavioral enrichment alongside nutrition, crickets have a clear advantage over the slower-moving dubia roach.

The nutritional limitations are significant. Crickets run approximately 1:9 calcium-to-phosphorus — the worst Ca:P ratio of common staple feeders. Every single feeding requires calcium dusting without exception. Gut-loading 24–48 hours before feeding is also non-negotiable: unfed crickets are nutritionally empty. According to ReptiFiles, improperly managed crickets are a leading cause of nutritional deficiency in captive leopard geckos.

Pro Tip: Never leave crickets in the enclosure overnight. Crickets bite sleeping geckos, causing stress and skin wounds. Remove any uneaten crickets within 15–20 minutes of feeding.

Pros: Lowest cost; accepted by virtually every gecko; strong hunting enrichment stimulus; available everywhere

Cons: Worst Ca:P ratio — must dust every feeding; loud, escape-prone, will bite sleeping geckos; die quickly without care

4. Mealworms — Best Easy Keeper

Mealworms are the lowest-maintenance feeder insect available. Store them in the refrigerator and they slow their metabolism to a crawl, surviving weeks with minimal care. No gut-loading container, no water crystals, no noise — just a container in the fridge.

As a rotation feeder for adult geckos, mealworms serve a legitimate role. They are accepted readily by most adults, are quiet and odorless, and available at every pet retailer for emergency restocking. The problems begin when they become the primary staple. Mealworms are higher in fat than protein — a ratio that drives obesity in adult leopard geckos when fed in excess. The hard chitin exoskeleton is also more difficult for young geckos to digest; ReptiFiles recommends avoiding mealworms entirely for juveniles under 6 months.

Use mealworms as a convenient secondary rotation feeder, not a foundation. One or two feeding sessions per week at most, rotated with dubias or BSFL.

Pros: Refrigerator storage for weeks; zero daily maintenance; accepted by most adults; silent and odorless

Cons: High fat — causes obesity as a staple; hard chitin shell is hard on juvenile digestion; poor Ca:P requires dusting every feeding

5. Hornworms — Best Treat and Hydration Boost

Hornworms (Manduca sexta caterpillars) are 85% moisture by body weight. No other common feeder comes close for hydration support. During shedding, after illness, or during hot weather when geckos drink less, a few hornworms can meaningfully improve hydration status. According to The Spruce Pets, hornworms are valued specifically as a palatability and hydration feeder in reptile care.

Leopard geckos pursue hornworms with enthusiasm. The bright blue-green color and vigorous movement trigger strong predatory responses even in geckos with reduced appetite. For sick or anorexic individuals, a hornworm is often the bridge that restarts feeding.

The limitations are practical. Hornworms are expensive per insect and have a short shelf life of 1–2 weeks. They also grow from small to very large quickly. Monitor size carefully — a hornworm that doubles in one week can go from the right size to dangerously oversized. Feed them promptly after purchase and do not attempt long-term storage.

Pros: 85% moisture — unmatched hydration boost; irresistible to most geckos; soft body for easy digestion; restarts appetite in anorexic geckos

Cons: Short 1–2 week shelf life; high cost per insect; low protein — not a nutritional staple; grow large quickly

6. Silkworms — Best Premium Feeder

Silkworms are the nutritionally superior feeder insect on this list. At approximately 64% protein on a dry matter basis, silkworms beat dubias, crickets, and BSFL. They deliver more muscle-building nutrition per feeding than any common alternative. They are naturally low in fat, making them an excellent choice for weight management in overweight adult geckos. Their soft bodies digest with minimal effort, suitable for all gecko sizes.

Silkworms also contain serrapeptase, an enzyme with documented anti-inflammatory properties. Its specific benefit to leopard geckos has not been studied in controlled trials. The anti-inflammatory properties are, however, well-established in the broader literature. PetMD notes silkworms as one of the nutritionally complete feeder insects for reptile diets.

The barriers are real. Silkworms require mulberry leaves or specialized silkworm chow to survive — they cannot be maintained on standard feeder insect gut-load. They have a short lifespan after purchase and are not widely stocked in local pet stores. For keepers committed to rotation feeding, ordering silkworms online every 2–3 weeks and feeding them promptly is the standard approach.

Pros: Highest protein of any common feeder; naturally low fat; excellent digestibility; serrapeptase enzyme content

Cons: Highest cost per insect; require mulberry leaf or silkworm chow; short lifespan; online-only purchase typically

7. Arcadia EarthPro-A + CalciumPro Mg — Best Supplement Combo

Arcadia EarthPro-A and CalciumPro Mg represent the most current science in insectivorous reptile supplementation. No leopard gecko diet is complete without correct supplementation. This combo is the top-tier option for keepers who want to optimize nutrition beyond standard Zoo Med products.

EarthPro-A uses preformed vitamin A (retinol) specifically because leopard geckos — as strict insectivores — convert beta-carotene to retinol poorly. CalciumPro Mg adds magnesium alongside calcium, supporting muscle contraction and nerve signaling in ways that calcium-only powders cannot. Both powders are ultrafine with excellent adhesion to all feeder insects.

For the full supplementation protocol, see our best leopard gecko supplements guide. For the complete leopard gecko care foundation including lighting, heating, and enclosure, see our leopard gecko care guide.

Pros: Formulated specifically for insectivores; magnesium support beyond standard calcium; preformed vitamin A for reliable delivery

Cons: Premium price; two-jar system requires a schedule; online-only availability

Feeder Insect Nutrition Comparison

Understanding Ca:P ratio is the most important nutritional concept for leopard gecko feeding. Most feeders deliver far more phosphorus than calcium. Phosphorus blocks calcium absorption in the intestines. A gecko eating un-dusted crickets is actively losing calcium balance with every feeding — even if it looks healthy for months.

| Dubia Roaches | ~54% | ~28% | 1:3 | ~65% |

| BSFL | ~42% | ~35% | 1.5:1 | ~61% |

| Crickets | ~65% | ~13% | 1:9 | ~77% |

| Mealworms | ~53% | ~33% | 1:7 | ~62% |

| Hornworms | ~9% | ~3% | 1:3 | ~85% |

| Silkworms | ~64% | ~10% | 1:2 | ~83% |

Key insight: only BSFL have a naturally favorable Ca:P ratio. Every other feeder requires calcium dusting to correct the imbalance. This is not optional — it is the nutritional foundation of every leopard gecko diet.

Leopard Gecko Feeding Schedule

Leopard geckos are not grazers. They are ambush predators with a boom-and-bust energy model. Overfeeding is the most common dietary error in captive leopard geckos. High-fat feeders like mealworms are the primary driver of fatty liver disease.

Juvenile Geckos (0–12 months)

• Feed daily — juveniles are in active growth phase and need consistent protein and calcium

• Offer 5–8 appropriately sized feeders per session

• Dust with calcium every single feeding — bone development is happening now

• Multivitamin once per week on a dedicated dusting day

• Best feeders: small dubias, crickets, BSFL, silkworms — avoid mealworms under 6 months

Adult Geckos (12+ months)

• Feed every 2–3 days — adults have slower metabolisms and are prone to obesity

• Offer 6–10 appropriately sized feeders per session

• Dust with calcium every feeding (without UVB) or every other feeding (with UVB)

• Multivitamin once per week

• Best feeders: adult dubias, BSFL, crickets in rotation — mealworms as secondary rotation only

Feeding Window

Always feed leopard geckos in the evening. They are crepuscular — most active at dusk and dawn. Feeding during their natural active window improves prey acceptance and supports natural behavior. Remove uneaten insects within 15–20 minutes to prevent bite injuries overnight.

Gut-Loading: The Step Most Keepers Skip

A feeder insect is only as nutritious as what it has recently eaten. A cricket that has been sitting in a bare container for 48 hours with no food is nutritionally empty. Gut-loading means feeding your feeder insects a nutritious diet 24–48 hours before offering them to your gecko. It is a non-negotiable part of the feeding protocol.

Best gut-load foods:

• Leafy greens: collard greens, dandelion greens, mustard greens

• Vegetables: carrots, butternut squash, sweet potato

• Fruit: small amounts of apple or mango for moisture

• Commercial gut-load formulas (Repashy Bug Burger, Lugarti Premium Gut Load)

Avoid gut-loading with:

• Spinach, beet greens, or high-oxalate vegetables — bind calcium

• Iceberg lettuce — no nutritional value, primarily water

• Citrus fruits — too acidic for feeder insects

Gut-load nutrition transfers to your gecko through the feeder insect's digestive tract. Well-gut-loaded dubias or crickets carry vitamins, trace minerals, and additional protein that calcium dusting alone cannot deliver. For a complete diet, gut-loading is the second pillar after correct supplementation.

Foods Leopard Geckos Must Never Eat

Leopard geckos are strict insectivores. Their digestive systems are not designed to process plant matter, fruit sugars, or commercial crested gecko diet (CGD). Offering these foods does not improve nutrition — it adds digestive stress and can cause serious illness.

Never feed leopard geckos:

• Fruit or vegetables — cannot be digested; leopard geckos lack the gut flora for plant cellulose

• Crested gecko diet or other powder diets — these are formulated for frugivorous species; not appropriate for insectivores

• Wild-caught insects — carry parasites, pesticides, and unknown pathogens

• Fireflies (lightning bugs) — contain lucibufagins, which are toxic and potentially lethal to reptiles

• Insects larger than the space between the gecko's eyes — impaction risk

• Pinky mice — occasionally offered by some keepers but too high in fat for routine feeding; use only rarely if at all

The insectivore designation is not flexible. According to PetMD's reptile diet guide, leopard geckos have a digestive system adapted for insect-based prey. They cannot extract meaningful nutrition from plant material.

Feeder Insect Size Guide

Insect size is a safety issue, not just a preference. Feeders wider than the space between your gecko's eyes pose a real impaction risk. The gecko may swallow the insect but cannot pass it safely through the digestive tract.

| Hatchling (0–8g) | Fruit fly / 1/4" dubia | Pinhead crickets | Mini mealworms only |

| Juvenile (8–30g) | Small (1/4–1/2") | 1/4" crickets | Small mealworms |

| Sub-adult (30–60g) | Medium (1/2–3/4") | 1/2" crickets | Standard mealworms |

| Adult (60g+) | Medium-large (3/4–1") | 3/4" crickets | Standard mealworms |

When in doubt, go smaller. Undersized feeders are always safer than oversized ones. A gecko that needs more food simply needs more feeders per session, not larger individual insects.

Building a Rotation Diet

No single feeder insect covers every nutritional need. A rotation diet cycles through 2–3 feeder species over the course of a week or month. It provides broader nutritional coverage, prevents feeding habituation, and reduces the risk of a gecko refusing a staple it has eaten exclusively for months.

Recommended rotation for adults:

• Primary staple (50–60% of feedings): Dubia roaches or BSFL

• Secondary rotation (30–40% of feedings): Crickets or silkworms

• Occasional treat (1–2x per month): Hornworms or waxworms

• Easy rotation filler: Mealworms — adults only, max 1–2 sessions per week

Variety introduces new prey items before a gecko has the chance to fixate on one feeder and refuse all others. Feeder fixation is a real behavioral issue — particularly with mealworms, which are highly palatable and easy to over-offer. Introducing dubia roaches or silkworms alongside crickets from a young age prevents this problem entirely.

For the full care context including enclosure setup, lighting, heating, and enrichment, see our comprehensive leopard gecko care guide.