Are anoles and lizards harmful
Anoles and the small lizards common in South Florida yards are not harmful to humans or pets. They do not carry diseases that transmit to people, they are not venomous, and their bite — if they are cornered and handled roughly — is too weak to break skin. The brown anole and the green anole are the two species you see most often on walls, screens, and fences.
They eat insects — ants, beetles, moths, roaches — so in a garden they are genuinely useful. The problems they cause are nuisance problems: droppings on porches and patios, getting into garages and screen rooms, and stacking up in large numbers around exterior lights. If you have a heavy anole population, the issue is the mess and the intrusion, not a health risk.
How lizards get into a house, garage or lanai
Lizards get into a house, garage, or lanai through gaps under doors, torn screens, weep holes in brick, gaps around pipes and utility lines, and open doors and windows. Anoles are small — a brown anole can fit through a gap the width of a pencil — so even small cracks around a door frame or a torn corner of a screen are enough.
They are also attracted to the interior by the same thing that attracts them outside: light that draws insects. A garage with the door open and a light on at night is an open invitation. Once inside, they are hard to catch because they are fast and they hide behind furniture, appliances, and stored items. The best approach is prevention: seal the gaps, fix the screens, and keep doors closed when lights are on.
Why they gather on screens and walls at night
Anoles and small lizards gather on screens, stucco walls, and fence posts at night because these surfaces are close to the exterior lights that draw the insects they eat. A porch light, a floodlight, or a lit window creates a zone where moths, beetles, and other flying insects cluster — and the lizards position themselves on the nearest vertical surface to pick them off.
The warmer the night, the more active both the insects and the lizards are. After a summer rain, insect activity spikes, and you will see a corresponding spike in lizards on screens and walls. If you turn off the light, the insects disperse, and the lizards move elsewhere. The light, not the wall itself, is the attraction.
How to get a lizard out of the house
If a lizard is inside your house, the simplest method is to darken the room, open a door or window to the outside, and shine a single light toward the exit — the lizard will often move toward the light on its own. If that does not work, place a box on its side near the lizard and gently herd it toward the box with a piece of cardboard, then slide a piece of paper or cardboard under the box and carry it outside.
Do not grab the lizard by the tail — anoles can drop their tails as a defense, and while it regrows, it is stressful for the animal. Do not chase it with a broom or try to catch it by hand, as this will send it deeper into hiding. Be patient: the lizard wants to leave as much as you want it to. If it is behind heavy furniture, wait until dark, turn off all interior lights, and open the nearest exterior door with a light on outside.
Keeping lizards off the porch and patio
To keep lizards off a porch or patio, reduce the lighting that draws them and the insects they feed on, clear clutter where they hide, and create an unpleasant perimeter along the routes they use to reach the feeding areas. Switch cool-white floodlights to warm or yellow LED bulbs, which attract fewer insects.
Put lights on a timer or motion sensor so they are not on all night. Sweep the patio each evening before turning on lights, so insects have fewer surfaces to land on. Clear potted plants, furniture cushions, and clutter from the porch floor — these give lizards daytime hiding spots. Run a granular band along foundation lines, the base of exterior walls, and door thresholds — the routes anoles use to reach exterior lights. One application lasts two to three weeks. The combination of lighting changes and a perimeter band is what produces results, because the lizards lose both their food source and a comfortable route to it.
What does NOT work
Ultrasonic and sound-emitter devices do not repel lizards — lizards do not hear in the range these devices target, and there is no evidence they change lizard behavior. Lizard repellent sprays sold online are generally not formulated for lizards and have no demonstrated effect. Mothballs are illegal for outdoor use and toxic to pets and children.
Glue boards and sticky traps catch lizards but also catch geckos, tree frogs, and beneficial insects, and they are inhumane — they do not solve the underlying problem, which is the light and insects that drew the lizards in the first place. A one-and-done spray or device does not work, because lizards return as long as the light, insects, and hiding spots that drew them remain. No single product solves a lizard problem by itself — reducing the lighting, clearing clutter, and maintaining a perimeter is the only approach that lasts.
About the powder
ReptilesAway is a granular powder — not a spray — that you shake along foundation lines, the base of exterior walls, and door thresholds where anoles travel to reach exterior lights. It is formulated as an EPA FIFRA 25(b) minimum-risk pesticide — made only from ingredients on the EPA's minimum-risk list, so it is exempt from federal registration.
The 32 oz bag ($24.99) covers about 1,500 sq ft; the 5-gallon bucket ($164.99) covers about 30,000 sq ft. One application lasts two to three weeks. The five ingredients — sodium chloride, citric acid, lemongrass oil, peppermint oil, and garlic oil — are printed on every bag. Made in Fort Lauderdale, Florida, with a 30-day money-back guarantee. For local treatment in Miami-Dade, Broward, or Palm Beach, call 1-833-8REPTILES (1-833-873-7845) for a quote — no contracts.
Made with food-grade and botanical ingredients. As with any product, keep pets from eating it directly and check the ingredient list if your pet has known sensitivities to any of them.
To keep lizards (anoles) off your property, lay a granular band along the travel routes described above. The 32 oz bag covers 1,500 sq ft — enough for a typical yard perimeter. For a full perimeter or a large lot, the 5-gallon bucket covers 30,000 sq ft. See our application guide for the three-step method.
Common questions
Are anoles harmful to humans or pets?
No. Anoles are not venomous, do not carry diseases that transmit to people, and their bite is too weak to break skin. They eat insects like ants, beetles, and roaches, so they are beneficial in a garden. The problems they cause are droppings on patios and getting into garages and screen rooms.
How do lizards get into a house?
Lizards enter through gaps under doors, torn screens, weep holes in brick, gaps around pipes, and open doors and windows. They are drawn inside by light that attracts insects. Seal gaps with weatherstripping, repair screens, and keep doors closed when lights are on to prevent entry.
How do I get a lizard out of my house?
Darken the room, open a door or window, and shine a light toward the exit — the lizard will often move toward it. Or place a box on its side near the lizard and gently herd it in with cardboard. Do not grab it by the tail, as anoles can drop their tails as a defense. Be patient and let it leave on its own.
How do I keep lizards out of my garage?
Keep the garage door closed when the light is on at night, seal gaps around the door frame, and reduce clutter that gives lizards hiding spots. Switch bulbs to warm LED to attract fewer insects. Run a granular band along the base of the garage door and walls. One application lasts two to three weeks.
Does lizard repellent actually work?
Ultrasonic devices and general animal repellent sprays have no demonstrated effect on lizards. What works is reducing the nighttime lighting that draws insects, clearing clutter, sealing gaps, and maintaining a granular perimeter band along foundation lines and door thresholds. No single product solves it alone.