Are house geckos dangerous or harmful?

House geckos are not venomous or aggressive. They do not bite humans under normal circumstances. However, their droppings and urine carry Salmonella bacteria causing food poisoning if contacted. Some people develop allergic reactions to shed skin cells. Monitor lizards are protected by law and should never be handled.

Why are lizards in my Singapore home?

Lizards are attracted to homes by three factors: (1) Food — they hunt flies, mosquitoes, and other insects; (2) Shelter — they hide in warm corners, behind furniture, in cracks; (3) Moisture — Singapore's tropical 75-85% humidity year-round creates ideal lizard conditions. Presence indicates insect problem exists.

How do professional pest control companies remove geckos?

Professional removal uses humane methods: (1) Sticky traps placed in high-activity areas; (2) Non-toxic repellents applied to entry points; (3) Safe trapping and relocation to NParks or forests; (4) Complete entry point sealing prevents re-entry; (5) Ongoing monitoring ensures no return.

July 29, 2026

Lizard & Gecko Control Singapore

Professional removal, prevention, and Salmonella health protection

House geckos are common in Singapore homes, but their droppings carry serious health risks. While common house geckos are generally not dangerous to humans and pose no direct physical threat, their droppings and urine can carry Salmonella bacteria, which can cause food poisoning if it contaminates kitchen surfaces or food.

Lizards are common in Singapore, but with the right approach, you can keep them from invading your home and yard. Professional removal combined with prevention eliminates both the gecko population and future infestations.

House Geckos vs Monitor Lizards: Identification & Legal Status

House Geckos (Common)

Size: 10-25cm length

Color: Greyish-tan, soft skin

Habitat: Indoor walls, ceilings

Feed on flies, mosquitoes
Generally docile
Rarely bite humans
Can be removed professionally
Relocate to NParks/forests

Monitor Lizards (Protected)

Size: Up to 2-3 meters long

Color: Dark with patterns

Habitat: Outdoor gardens, drains

Protected by Wildlife Act
Illegal to trap or remove
Contact NParks immediately
Can injure people/pets
Muscular tail is dangerous

Legal note: Snakes, monitor lizards, monkeys, wild boar, bats, civets and pangolins are protected under Singapore’s wildlife laws. They are removed and relocated by trained wildlife responders, not exterminators. Only professional pest control can handle house geckos; monitor lizards require NParks.

Why Singapore’s Tropical Climate Attracts Lizards Year-Round

Perfect conditions for year-round lizard breeding and activity

Ideal temperature: Singapore’s tropical climate — warm, humid, and consistent year-round — creates the perfect environment for lizards to thrive. Constant 27-32°C eliminates seasonal dormancy.
Humidity factor: 75-85% humidity year-round matches gecko breeding requirements. No dry season break.
Abundant food source: With a constant supply of insects like mosquitoes and flies, homes naturally become feeding grounds for house geckos. Tropical insect populations support large gecko populations.
HDB-specific risk: Lizards are especially common in HDB flats, condos, and landed properties where lighting, moisture, and small entry gaps make access easy.
Structural vulnerabilities: In Singapore’s older HDB blocks, especially, there are often small gaps near plumbing fixtures, utility conduits, and window frames that go unnoticed for years — but they’re basically welcome mats for lizards.
Multiple generation breeding: Warm year-round climate enables multiple breeding cycles annually, creating exponential population growth if uncontrolled.

Health Risks: Salmonella & Allergies from House Geckos

Understand the health concerns beyond mere annoyance

Salmonella bacteria risk: Gecko droppings and urine can carry Salmonella bacteria, which can cause food poisoning if it contaminates kitchen surfaces or food. Risk especially high in kitchens and food storage areas.
Transmission method: Geckos crawl across contaminated surfaces (drains, outdoor areas) then crawl across kitchen counters, food, and eating utensils. Salmonella transfers through contact.
Food poisoning symptoms: Diarrhea, vomiting, fever, abdominal cramps occurring 6-72 hours after exposure. Can last 7-14 days. Severe cases require hospitalization.
Allergic reactions: Some people develop allergic reactions to lizard skin cells or droppings. Reactions range from itching to full anaphylaxis in extreme cases.
Psychological impact: People with Herpetophobia (reptile phobia) may experience significant psychological distress. Fear responses to unexpected gecko sightings justified by genuine health concerns.
Risk minimization: Keeping house clean and food covered essential. Full removal and prevention eliminates risk entirely.

Why Geckos Are Attracted to Your Home: Three Key Factors

Factor #1: Food (Insects)

Lizards are usually attracted to homes for two primary reasons: shelter and food. They hunt smaller pests like mosquitoes, flies, or ants, but this also means they can enter homes if there’s a significant pest problem.

Flies attract geckos first
Mosquitoes are prime prey
Ants and other insects secondary
Presence indicates insect problem
Eliminating insects reduces gecko attraction

Factor #2: Shelter (Hiding)

Homes with easy access points, such as open windows or cracks, also provide a perfect shelter. Dark, warm corners ideal for gecko hiding.

Behind furniture and artwork
Picture frames and wall hangings
Under bookshelves and cupboards
Piles of newspapers and clutter
Cracks in walls and crevices

Factor #3: Warmth & Moisture

Lizards like to hide in warm spots or near electronic appliances. Singapore’s tropical humidity provides moisture for gecko survival.

Near television and computers
Behind refrigerators
Kitchen appliance areas
Bathroom moisture corners
Air-conditioned room edges

Entry Points: How Geckos Get Into HDB Flats & Homes

Common gecko access routes in Singapore homes

Window and door gaps: Homes with open windows, broken door screens, unsealed cracks in walls, or gaps around pipes provide easy access for lizards. Even 3-5mm gaps allow gecko entry.
Plumbing penetrations: In older HDB blocks, small gaps near plumbing fixtures, utility conduits, and window frames go unnoticed for years — but are basically welcome mats for lizards.
Air conditioning conduits: External A/C pipes have gaps where they enter walls. Geckos climb exterior and enter through these openings.
Cable and wire passages: Electrical wiring conduits, internet cables, TV wires create entry pathways behind walls.
Ceiling access points: Gaps between ceiling and wall in older HDB blocks. Geckos drop down into homes from above.
Ventilation grilles: Kitchen extractor hoods, bathroom exhaust vents without proper screening.

Professional Lizard & Gecko Removal: Safe Humane Methods

How professional pest control safely eliminates geckos

Step 1 – Inspection & monitoring: Professionals conduct a thorough inspection and place sticky traps to monitor and remove house lizards. Traps identify gecko activity hotspots and population size.
Step 2 – Sticky trap placement: Stick traps within corners of cabinets and drawers or by sides of walls where they crawl. Non-toxic, sticky surface captures geckos for safe relocation.
Step 3 – Non-toxic repellents: Professional pest control will use sustainable methods to safely trap the lizards and hand them over to NParks, who will then release the lizards in a safe location such as a park or forest.
Step 4 – Removal & relocation: Captured geckos handed to NParks or wildlife rescue for relocation to natural habitat. 100% humane, no killing.
Step 5 – Entry point sealing: Professional identifies all gecko entry points and seals them to prevent re-entry after removal.
Step 6 – Underlying pest treatment: Professional treats underlying insect problems (flies, mosquitoes) that attracted geckos initially.

DIY Prevention Strategies: Entry Sealing & Clutter Removal

Seal all cracks: The most effective prevention strategy combines multiple approaches. Seal all entry points — cracks in walls, gaps around pipes, damaged door and window screens.
Window & door management: Seal gaps under windows and doors, and keep them closed when not in use. Especially important at dusk when geckos most active.
Reduce clutter: Reduce clutter — lizards hide behind picture frames, artwork, bookshelves, even cupboards. They hide among piles of newspapers and garbage cans so minimize clutter to reduce hiding places.
Eliminate food source: Reduce the food supply by keeping your home insect-free and clean. Treating fly/mosquito problems removes gecko attraction.
Natural repellents: Mothballs, crushed eggshells near entry points, or cayenne pepper spray can deter lizards. However, effectiveness limited compared to professional methods.
Keep area clean: A clean home is less likely to attract insects, reducing the food source for lizards. Regular vacuuming and cleaning essential.

Signs of Gecko Infestation: When to Call Professional Pest Control

Indicators requiring professional intervention

Frequent daytime sightings: Multiple geckos visible during day indicates established population, not isolated visitors.
Gecko droppings visible: Small black pellets in kitchen cabinets, shelves, or near food storage areas indicate contamination risk.
Eggs discovered: Females lay their eggs in quiet, undisturbed corners, which is another reason decluttering is one of the most powerful prevention tools. Finding eggs indicates breeding population.
Prevention failure: Despite sealing cracks and cleaning, geckos continue appearing = professional intervention necessary.
Psychological distress: Fear or anxiety about gecko presence affecting quality of life = professional removal justified.
Salmonella contamination risk: Kitchen infestation or health concerns justify immediate professional removal.

Frequently Asked Questions

Are house geckos beneficial to keep?

Lizards can be beneficial by eating smaller pests like insects, but their presence in homes can become a nuisance for many. Too many lizards in the home can lead to property damage or discomfort for residents. While they eat insects naturally, Salmonella risk and psychological discomfort make professional removal recommended.

How many geckos can be in one home?

Population can expand rapidly. Some homeowners might be tempted to leave lizards due to their pest-eating habits, but it’s essential to maintain a balanced environment. Few geckos natural; dozens indicate breeding colony requiring professional removal.

Can I catch and release geckos myself?

Technically possible but professionally managed release safer. If having trouble getting rid of lizards yourself, contact a professional pest control company using sustainable methods to safely trap lizards and hand them to NParks for safe location release. Professionals ensure proper relocation.

How long does professional gecko removal take?

Inspection: 1-2 hours identifying activity hotspots. Sticky trap placement and monitoring: 1-2 weeks. Capture and removal: ongoing as geckos are caught. Entry point sealing: 2-4 hours. Complete control typically 3-4 weeks with follow-up monitoring ensuring no return.

Professional Lizard & Gecko Control

House geckos carry Salmonella in droppings contaminating kitchens and food. DIY prevention rarely sufficient — multiple entry points exist in older HDB flats. Professional identification ensures correct removal method, complete entry sealing prevents re-entry, humane relocation protects geckos while protecting your family. Professional treatment of underlying insect problems eliminates gecko attraction permanently.