Why this product
The Exo Terra Gecko Cave Medium is the adult sized humid hide most leopard gecko keepers buy when their gecko outgrows the small. The cave is the same polyresin construction, the same care protocol, and the same earth tone color as the small version, scaled up to fit a 60 to 110 gram adult leopard gecko fully under cover. For most keepers, the upgrade from small to medium happens around month 6 to 9 of the gecko’s life, when the gecko stops fitting fully under the small cave with its tail tucked.
For this review, we built our analysis from Exo Terra’s published spec sheet, recent Amazon owner photos, and direct comparison with three other reptile hides. Exo Terra did not provide a sample. Where we cite a measurement, the source is the manufacturer spec sheet or aggregate owner reports.
The defining trade with the medium is the floor space. In a 20 long leopard gecko enclosure (30 by 12 inches), two medium caves take up roughly half the floor footprint, which is the right ratio for a leopard gecko but tight for keepers who also want a basking platform, a water dish, and decor in the open space.
What Exo Terra claims (specs)
Exo Terra lists the medium Gecko Cave as a polyresin humid hide approximately 7.5 by 6 by 4 inches with an entry hole sized for an adult gecko to enter and feel covered. The cave can be used as a humid hide with damp sphagnum moss inside, a dry hide on the cool side, or a general shelter. Care per the manufacturer is rinse with warm water, no detergents.
The cave positions for adult leopard geckos, adult crested geckos, gargoyle geckos, and small snakes under about 100 grams. There is no setup beyond placing the cave on substrate and optionally lining with moss.
Who should buy
This cave is the right call for any keeper with an adult leopard gecko, an adult crested gecko, or a juvenile snake under about 100 grams. The cave is also the right pick as a second hide on the cool side of an existing enclosure that already has a small cave on the warm side, for keepers who want the cool hide to match the warm hide aesthetically.
Buy two of these caves for an adult leopard gecko. Buy one to upgrade from the small once the gecko outgrows it. Skip this size if your gecko is still under 50 grams and the small fits without crowding.
Why two hides matter for leopard geckos
The standard modern leopard gecko care recommendation is at least two hides plus a humid hide for shed support. The simplest implementation is two medium caves in a 20 long enclosure: one on the warm side over the under tank heater, with damp sphagnum moss inside as the humid hide, and one on the cool side dry as the cool hide. The gecko picks which side to spend the day in based on body temperature, and the humid hide on the warm side supports clean sheds.
A leopard gecko that only has one hide on one side of the enclosure has to choose between body temperature and security, and most geckos pick security and end up too cold or too hot. Two hides resolve that tradeoff for the cost of about $28 in caves.
Build quality and long term durability
The molded resin construction is the same material Exo Terra uses across the Gecko Cave line. Owners report no cracking, fading, or warping over multiple years of use. The textured exterior collects substrate that needs occasional rinsing, but the cave does not absorb stains and does not develop a smell even with daily damp moss inside.
For deep cleaning between animals, the standard reptile safe disinfectants (chlorhexidine, F10) work without damaging the resin. Avoid bleach because the textured surface holds residue and avoid the dishwasher because the heat cycle can warp the resin.
Long term plan and what comes next
For most leopard geckos, this cave is a permanent fixture. The medium is large enough for an adult and the polyresin construction lasts indefinitely. The only reason to upsize further is for a particularly large male leopard gecko over about 110 grams, where a larger cave or a custom hide is the right next step.
For more on how we evaluate reptile hides and other pet products, see our methodology page.
Exo Terra Gecko Cave Medium vs. the competition
| Product | Our rating | Size | Material | Use | Price | Verdict |
|---|---|---|---|---|---|---|
| Exo Terra Gecko Cave Medium | ★★★★★ 4.5 | Medium | Polyresin | Humid or dry | $14 | Top Pick Medium Hide |
| Exo Terra Gecko Cave Small | ★★★★★ 4.5 | Small | Polyresin | Humid or dry | $9 | Editor's Choice Juvenile |
| Zoo Med Repti Shelter 3 in 1 Medium | ★★★★☆ 4.4 | Medium | Polyresin | Humid or dry | $16 | Recommended Alternative |
| Penn Plax Reptology Shale Step | ★★★★☆ 4.3 | Medium | Polyresin | Dry only | $18 | Best Decorative |
Full specifications
| External dimensions | Approximately 7.5 x 6 x 4 inches |
| Internal cavity | Sized for an adult leopard gecko 60 to 110 grams |
| Material | Polyresin, non porous |
| Color | Earth tone brown rock texture |
| Use | Humid hide, dry hide, or general shelter |
| Recommended species | Adult leopard gecko, adult crested gecko, gargoyle gecko, small snakes |
| Care | Rinse with warm water, no detergents |
| Setup | Drop in, optionally line with damp sphagnum moss |
| Footprint | About 45 square inches |
| Warranty | Limited manufacturer warranty per Exo Terra's listing |
Should you buy the Exo Terra Gecko Cave Medium?
The Exo Terra Gecko Cave Medium is the adult sized version of the same polyresin humid hide most leopard gecko keepers start with. The internal cavity fits a 70 to 100 gram leopard gecko fully under cover, the entry hole is sized so the gecko feels secure rather than exposed, and the resin shell holds damp sphagnum moss without molding the cave itself.
Frequently asked questions
Is the medium the right size for an adult leopard gecko?+
Yes. Adult leopard geckos are 60 to 90 grams for females and 70 to 110 grams for males, and the medium internal cavity holds an animal in that weight range fully under cover with the tail tucked. For a particularly large male over about 110 grams, the [Zoo Med Repti Shelter Large](/reviews/exo-terra-gecko-cave-small) is the next step up.
Should I have one or two of these?+
Most modern leopard gecko care guides ask for at least two hides, a warm side and a cool side, plus a humid hide for shed support. The simplest setup is two medium caves: one on the warm side with damp sphagnum moss inside as the humid hide, and one on the cool side dry as the cool hide. That covers all three roles with two purchases.
How often do I replace the moss inside?+
Replace the sphagnum moss every 4 to 6 weeks. Mist the moss every 1 to 2 days during shed cycles to keep humidity inside the cave at 70 to 90 percent. Between sheds, the moss can be allowed to dry slightly between mistings. Sphagnum moss in 1 pound bags from any reptile retailer lasts most keepers 6 to 12 months.
Will it fit a small ball python or corn snake?+
The medium cave fits a juvenile ball python or corn snake under about 100 grams. For a sub adult or adult of either species, the cave is too small. Adult ball pythons need a hide sized so the snake fits coiled inside without much spare room (snakes feel secure in a tight hide), which usually means a Hide Box specifically labeled for ball pythons rather than the gecko cave.
Can I clean it in the dishwasher?+
No. Per Exo Terra's listing, the cave is intended to be rinsed with warm water, no detergents, and no dishwasher. The dishwasher heat cycle and detergent can warp the resin and leave residue. For deep cleaning, a chlorhexidine or F10 reptile safe disinfectant followed by a thorough rinse and dry is the standard protocol.
📅 Update log
- May 9, 2026Initial review published. Comparison set includes Exo Terra Small, Zoo Med Repti Shelter, and Penn Plax Shale Step.
