Lizards in the House: Geckos, Anoles and What to Do
Lizards in the house are usually harmless geckos or anoles hunting bugs. ID them in seconds, catch and release safely, and seal gaps to keep them out.
DIY-friendly: Usually DIY-able: correct ID + sealed entry + label-led method. Act on first signs — it only gets cheaper early. Hiring guide →
In this guide
Lizards in the house are almost always harmless insect hunters, not a sign of a bigger problem. In warm states the night visitor frozen on the wall is usually a Mediterranean or common house gecko, and the daytime dasher near the door is usually a brown or green anole. Both eat the bugs you like less, neither damages the home, and a cup plus a sealed gap solves most cases. This page shows how to tell them apart, move one outside safely, and keep the next one out. The lizard hub collects every guide in this series.
Which lizard is in your house?
Start with the clock. Geckos work the night shift and anoles work days, so the hour you spot it cuts the suspects in half. A small lizard stuck to a lit wall or ceiling after dark is a house gecko. A slender one sprinting across the patio or slipping under the door in daylight is an anole.
House geckos look built for walls. They run 3 to 6 inches nose to tail, with bulging lidless eyes, vertical slit pupils, and wide toe pads that grip glass and ceilings, according to UF/IFAS Extension. Color ranges from near see-through pinkish to gray or mottled brown, often with dark chevrons or side stripes. Two introduced species dominate southern homes. The Mediterranean house gecko reaches 4 to 5 inches with a rounded snout, bumpy skin on the back, and a banded tail, while the common house gecko reaches 3 to 6 inches with a longer snout, a tapering tail, and a creamy white belly, per Texas A&M AgriLife Extension. Both may chirp or squeak when startled, a sound few other small lizards make.
A house gecko flattened on an exterior wall near a door, the classic pose before one slips inside.
Anoles look built for running. Adults of both common species reach 5 to 8 inches, and males flash a throat fan called a dewlap during courtship and threats, reports UF/IFAS Gardening Solutions. The native green anole shifts between bright green and dull brown and males carry a solid pink dewlap. The Cuban brown anole, a cargo hitchhiker now the most common lizard across much of urban Florida, stays in mottled browns and grays, has a shorter snout, and males show an orange dewlap edged in white or yellow. Neither is a true chameleon despite the nickname.
An orange dewlap with a pale border marks a male brown anole in display.
| Trait | House gecko | Anole |
|---|---|---|
| Active hours | Night, near lit windows and porch fixtures | Day, on patios, fences, and plants |
| Eyes and feet | Bulging lidless eyes, slit pupils, wide sticky toe pads | Smaller eyes with lids, narrow clawed toes for running |
| Color | Pale pinkish to gray or mottled brown | Green anole shifts green to brown; brown anole stays mottled brown |
| Throat fan | None | Dewlap: males flash pink (green) or orange-edged (brown) fans |
| Sound | Chirps or squeaks when alarmed | Silent |
| Size | 3 to 6 inches nose to tail | 5 to 8 inches nose to tail |
| Eggs | Pairs of sticky eggs in crevices through summer | Eggs in moist soil and mulch in warm months |
Lamellae are the rows of tiny gripping scales under a gecko’s toes that let it walk up glass and across ceilings. A dewlap is the extendable throat fan male anoles flash to court females and warn rivals. With those two terms the table reads fast: pads and night mean gecko, fan and day mean anole.
Fine green scales and the folded pink throat fan of a green anole, the native species.
One dropping check settles doubtful cases. Gecko droppings are elongated and brownish with white tips, and they stain fabric, curtains, and carpet where they land, per Texas A&M AgriLife Extension. Mouse pellets lack the white cap. If you are sorting other small look-alikes first, our flying ant versus termite comparison shows the same compare-three-traits method.
Why did lizards come inside your home?
They followed food and easy entries. Geckos stake out porch lights, lit windows, and bright doorways because moths, cockroaches, and other insects gather there, and both UF/IFAS Extension and Texas A&M AgriLife Extension describe this exact ambush. A lizard that wanders through an open gap finds more of the same inside: flies in the kitchen, spiders in corners, roaches under appliances. Critter Control’s wildlife team notes that an active indoor insect problem can pull geckos in and hold them there.
Warmth and shelter rank second. Geckos stay most active from spring through fall and press into cracks, crevices, and wall voids as nights cool. Your home offers steady heat plus daytime hiding spots behind shutters, under siding laps, and inside garage clutter. Anoles slip in more by accident while chasing prey or fleeing a predator, usually through a door left open on a warm afternoon.
The entries are smaller than you think. Geckos pass through cracked caulk, torn screens, loose weather stripping, and gaps around pipes, cables, and soffits. Critter Control’s wildlife team warns that tiny gaps around doors and windows are enough for a small gecko. High insect numbers plus sloppy seals explain nearly every indoor sighting. Cut either one and visits drop.
Outdoor habits feed the indoor count. Dense shrubs against the walls, mulch piled to the siding, and lights burning all night build a lizard colony right at the threshold. Trim branches back a foot or two, pull mulch off the foundation, and light only what you need. Fewer hunters outside means fewer explorers inside. The same tidy-yard logic keeps snakes away too.
Are house lizards dangerous or helpful?
Helpful first. House geckos and anoles eat moths, cockroaches, beetles, flies, spiders, and other small invertebrates around and inside the home. UF/IFAS Extension says some homeowners keep indoor geckos on purpose for this free pest control, and UF/IFAS Gardening Solutions calls both anole species useful garden predators. A single gecko working the laundry room eats far more than it costs you.
Bites barely register. The only venomous lizard in the United States is the Gila monster of Southwestern deserts, which rarely enters homes, according to Critter Control’s wildlife team. A stressed house gecko may nip, but its tiny teeth cannot break human skin. Anoles may bite if grabbed and held. Neither chases people or pets.
Germs deserve more respect than teeth. Most reptiles carry Salmonella in their intestines, mouths, and droppings without looking sick, and human infection brings flu-like symptoms that can turn serious, per Critter Control’s wildlife team. That is the real reason to avoid bare-hand handling. Wash with soap after any contact, keep lizards off food prep surfaces, and teach kids to look without touching.
Droppings are the main nuisance. Gecko scat lands on sills, curtains, rugs, and car hoods as brown streaks capped in white, and the stains set if ignored. Wipe fresh droppings with a damp paper towel while wearing disposable gloves, then clean the spot with household cleaner and wash your hands. Repeated piles under one fixture mean a gecko roosts above it each night, which points straight at the light and gap to fix.
Cats and dogs change the math a little. Most pets that catch a gecko or anole suffer nothing worse than a lost snack, but reptiles can carry parasites and bacteria, so discourage hunting and wash pet bowls kept near lizard roosts. If a pet eats several lizards and then vomits or goes off food, call the vet with details. Prevention guides for German cockroaches, house flies, and house spiders shrink the indoor buffet that draws both lizards and the pets chasing them.
How do you get a lizard out and keep it out?
Catch first, seal second. One lizard indoors is a visitor, not an infestation, so humane removal plus exclusion beats every spray on the shelf.
Catch aid: the cup and card method
Work calmly and the lizard stays catchable. Trap it against the wall or window under a clear cup, margarine tub, or jar, then slide a stiff card under the mouth and lift. Carry the sealed cup outside and release it near cover such as shrubs or a woodpile, away from the door it used. Texas A&M AgriLife Extension recommends exactly this jar technique, and Critter Control’s wildlife team gives the same cup-and-release advice for geckos.
Skip two common mistakes. Never grab the body or tail, which injures the animal and risks a bite, and never handle reptiles with bare hands because of Salmonella. Also skip glue boards. Both extension services warn that sticky traps kill geckos slowly with no humane release option, so they fail the test this site applies to all wildlife: if the method causes drawn-out suffering, pick another one.
Exclusion aid: the ten-minute gap check
Walk the home with fresh caulk in hand once the visitor is out. Press silicone caulk into cracks around windows, doors, soffits, and where pipes and cables pierce the walls. Renew worn weather stripping so doors close tight to the threshold, add or repair door sweeps, and patch torn screens. These are the exact fixes UF/IFAS Extension and Texas A&M AgriLife Extension prescribe, including foam sealant for larger exterior voids used as daytime hiding spots.
Then starve the hunting grounds. Switch off porch and landscape lights you do not need, or put the rest on motion sensors so insects stop gathering at the walls each night. Fix drips, empty drip trays, and store dry goods sealed so roaches and pantry pests cannot feed the next gecko through winter. Our identification hub and the A to Z pest list help you name whatever the lizards were eating.
Set expectations last. No pesticide is registered for gecko control inside structures, and sprays aimed at lizards change little, per both extension sources. General insect sprays can even backfire by cutting the geckos’ food without sealing a single gap, leaving hungry survivors inside. When one gecko appears each summer near the same door, treat it as a maintenance reminder: recaulk, adjust the light, and release the hunter back to the garden where it does the most good.
Frequently asked questions
Are lizards in the house dangerous?
Almost never. House geckos and anoles are not venomous and do not damage homes. The only venomous US lizard is the Gila monster of the Southwest desert, which rarely enters homes. Wash hands after handling any reptile because most carry Salmonella.
Why do geckos gather around my porch lights?
The light draws moths, cockroaches, and other insects, and geckos gather to hunt them. They are nocturnal and wait near lit windows and porch fixtures through spring to fall. Cut the insect traffic and the geckos move on.
How do I catch a lizard in the house without hurting it?
Trap it against the wall under a clear cup or margarine tub, slide a stiff card underneath, and carry it outside. Do not grab the tail or handle it with bare hands. Seal the gap it used so it cannot walk back in.
How do I keep geckos from coming back inside?
Seal gaps with silicone caulk, renew weather stripping around doors and windows, and close cracks around soffits and pipe entries. Switch off unneeded outdoor lights and cut indoor insect numbers so the house stops looking like a hunting ground.
Should I spray pesticide for geckos indoors?
No. No pesticide is registered for gecko control inside structures, and sprays aimed at lizards barely change their numbers. Exclusion plus fewer insects works better and harms nothing. Skip glue boards too, since they kill geckos slowly with no humane release.
Useful links (4)
- UF/IFAS Extension Lake County: Managing House Geckos— blogs.ifas.ufl.edu
- Texas A&M AgriLife Extension: House Geckos— citybugs.tamu.edu
- Critter Control: Lizards in the House— crittercontrol.com
- UF/IFAS Gardening Solutions: Anoles— gardeningsolutions.ifas.ufl.edu
Photo credits
Thank you to Vouliagmeni, MatthewHoobin, Nosferattus and PiccoloNamek for sharing these beautiful photographs and helping bring this guide to life.
