Wall geckos follow their food supply indoors, so getting rid of them permanently means removing the insects they hunt, blocking their entry points, and making your home as unwelcoming as possible. A single approach rarely works. Combining habitat changes, repellents, and traps gives you the best chance of clearing them out for good.
Why Geckos Are in Your Home
The common house gecko is a generalist predator that eats almost any insect or spider it can catch and swallow. It thrives on flat walls and ceilings near artificial lighting, because lights attract the insects it feeds on. If you notice geckos clustering around porch lights, kitchen windows, or bathroom fixtures at night, that’s the connection: light draws bugs, bugs draw geckos.
Beyond food, geckos prefer warm, humid spaces with plenty of cracks and crevices to hide in during the day. Gaps around window frames, spaces behind picture frames, openings where pipes enter walls, and unsealed door sweeps all serve as both entry points and daytime shelters. A home with an active insect population and easy access points is essentially a gecko habitat.
Cut Off Their Food Supply
This is the single most effective long-term strategy. If there’s nothing to eat, geckos have no reason to stay. Start by addressing what attracts insects indoors:
- Switch outdoor lighting. Replace white bulbs near doors and windows with yellow or sodium vapor bulbs, which attract far fewer flying insects.
- Keep food sealed. Crumbs, open fruit bowls, and pet food left out overnight all attract cockroaches, ants, and flies, which are prime gecko prey.
- Reduce moisture. Fix leaky faucets, dry out bathroom floors, and improve ventilation in humid rooms. Many insects breed in standing water or damp areas.
- Treat your perimeter. Applying a granular insecticide around your home’s foundation and yard, followed by a liquid insecticide spray around doors, windows, and cracks, can reduce insect populations for up to 90 days. Reapply quarterly to maintain the barrier.
Once the insect population drops noticeably, gecko numbers will decline on their own as the animals move on to better hunting grounds.
Seal Entry Points
Geckos can squeeze through surprisingly small gaps. Inspect your walls, ceilings, and windows for cracks, and seal them with caulk or weatherstripping. Pay special attention to:
- Gaps around air conditioning units and pipe entries
- Spaces under doors (install door sweeps)
- Cracks in window frames and screens
- Openings where electrical wiring enters the house
- Ventilation grilles without fine mesh covers
This step does double duty. Sealing gaps keeps geckos out and also reduces the number of insects entering your home.
Use Natural Repellents
Several strong-smelling substances discourage geckos from settling in an area. None of these will kill geckos or solve the problem alone, but they help push geckos away from specific rooms or surfaces.
Garlic. Crush a few cloves and place them on windowsills, in corners, and near openings. The sulfur compounds in garlic produce a pungent smell geckos avoid. Replace every few days as the scent fades.
Eggshells. Place dry, empty eggshells near windows, shelves, and along walls where geckos travel. The sulfur content irritates geckos, and the shells may mimic the presence of a bird, one of their natural predators. Keep them clean and dry so they don’t attract insects themselves.
Essential oil sprays. Mix a few drops of peppermint, eucalyptus, or lemongrass oil with water in a spray bottle and apply it near windows, behind furniture, and in kitchen corners. These oils are non-toxic and safe to use around most households, though reapplication every few days is necessary since the scent dissipates quickly.
Set Traps Strategically
Sticky glue traps designed for household pests are the most practical way to catch geckos already inside your home. Place them flat on the ground, flush against walls or baseboards, since geckos tend to crawl along edges rather than through open space. Corners of rooms, areas behind furniture, spots near windows, and spaces along walls where you’ve seen droppings are all good locations.
Adding a small piece of fruit or a few crumbs to the center of the trap attracts insects, which in turn draws geckos onto the adhesive. Check traps daily. If you catch a live gecko and want to release it, a few drops of vegetable oil on the adhesive will loosen the glue without harming the animal.
Non-toxic sticky traps are the safest option if you have pets or children. Avoid using rat-sized glue boards, which can trap unintended animals.
What About Commercial Repellent Sprays
Herbal lizard sprays, typically made from lemongrass, cedarwood, and neem oil, are available and marketed as non-toxic alternatives to chemical pesticides. These work on the same principle as homemade essential oil sprays, creating an unpleasant scent barrier. They’re convenient but not dramatically more effective than a DIY peppermint spray. If you use one, apply it along the gecko’s travel paths rather than randomly around the room.
Chemical insecticide sprays designed for broad pest control can kill geckos on contact, but they also leave toxic residue on surfaces you and your family touch. For most people, the combination of insect control, sealing, repellents, and traps achieves the same result without chemical exposure indoors.
A Note on Gecko Droppings and Hygiene
Like all reptiles, geckos can carry Salmonella bacteria in their digestive tracts and shed it in their droppings. A CDC-tracked outbreak linked to geckos resulted in 49 infections across 27 states, with nine hospitalizations. Children under five are at the highest risk of serious complications.
If you’re finding gecko droppings on countertops, shelves, or near food storage areas, clean them up with a disinfectant rather than just wiping them away. Wash your hands after handling anything a gecko may have contacted, and keep food preparation surfaces clear of droppings. This is one reason kitchen infestations deserve faster attention than a gecko living quietly behind a picture frame in the hallway.
Putting It All Together
A realistic eradication plan works in layers. First, treat your yard perimeter and indoor cracks with insecticide to collapse the insect population. Second, seal every gap you can find. Third, place sticky traps along walls in high-traffic gecko areas. Fourth, apply repellents (garlic, eggshells, essential oils) near the spots geckos frequent most. Repeat perimeter insecticide treatments every three months.
Most people see a significant drop in gecko activity within two to four weeks of cutting off the food supply and sealing entry points. The geckos that remain get picked up by traps or simply leave for better hunting elsewhere. Consistency matters more than any single product: a quarterly insect treatment and sealed home will keep geckos from returning long after the initial push.