Live vs Frozen Feeders for Leopard Geckos
Why live is the default
Leopard geckos are natural ambush predators triggered largely by movement, so live, moving prey reliably prompts a feeding response in a way that still or frozen prey usually doesn't for most individuals.
When frozen/pre-killed feeders help
Pre-killed frozen options (like frozen silkworm pupae) can be useful for geckos that refuse other feeders, as an occasional variety item, or as a convenient backup that doesn't require live-insect husbandry between feedings.
The gut-loading trade-off
Because gut-loading depends on a living insect's active digestion, frozen or pre-killed feeders generally can't be gut-loaded the way live insects can — their nutritional value is essentially fixed at time of freezing.
Practical use
Most keepers rely on live staples for the bulk of the diet and treat frozen/pre-killed options as a supplementary or backup choice rather than a primary feeding strategy.
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A single adult leopard gecko needs a 20-gallon long tank as an absolute minimum, with a 36x18 in (40-gallon breeder) footprint now considered the recommended standard — plus a secure lid, an under-tank heater on a thermostat, a thermal gradient, at least three hides, and a shallow water dish.
Set up in this order: substrate, then heat source wired through a thermostat, then hides and water dish, then decor — and run the whole enclosure for at least 24–48 hours to confirm stable temperatures before your gecko moves in.
Hatchlings can start in a 10-gallon tank or tub, juveniles do well in 20 gallons, and adults need a 20-gallon long as an absolute minimum — with 36x18 in (40-gallon breeder) now the widely recommended standard, not just an upgrade.
Heat a leopard gecko enclosure with an under-tank heater and/or overhead heat source (halogen or deep heat projector) wired through a thermostat — a thermostat is mandatory, not optional, and heat rocks should never be used.
Leopard geckos can survive without UVB using dietary D3 supplementation, but current husbandry guidance now recommends low-level UVB (roughly 2–6% T5) as best practice — it improves D3 synthesis, bone density, and natural behavior, and views on it have shifted significantly from older nocturnal-species advice.
Keep ambient humidity around 30–40% across most of the enclosure, with a dedicated humid hide raised to roughly 70–80% to support smooth, complete sheds.