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Home » Blog » Are Geckos Harmless? Exploring the Secrets of These Reptiles

Are Geckos Harmless? Exploring the Secrets of These Reptiles

Are Gecko harmless?

Geckos are small lizards that often find their way into our homes, and while their presence may be startling, it raises an important question: are geckos harmless? In this comprehensive article, we will delve into various aspects of gecko behavior, their interactions with humans, and address common concerns regarding their potential harm. Our goal is to provide a thorough understanding of geckos and to determine whether they pose any danger to humans.

Understanding Gecko Behavior

Geckos are primarily nocturnal creatures, meaning they are most active during the night. They are known for their ability to climb walls and ceilings, thanks to specialized toe pads that allow them to adhere to surfaces. These reptiles are generally shy and reclusive, preferring to avoid human contact. Their diet mainly consists of insects, which makes them beneficial in controlling pest populations within homes.

Are Geckos Harmful?

The short answer is no; geckos are not harmful to humans. Geckos are non-aggressive and will typically flee if they feel threatened. They do not possess venom, nor do they have any mechanisms that can cause significant harm to humans. In fact, geckos can be considered beneficial as they help in reducing the number of insects and other pests around the house.

Geckos and Allergies

One concern that some individuals might have is whether geckos can cause allergies. While gecko droppings can potentially cause allergic reactions in sensitive individuals, this is relatively rare. Keeping your living environment clean and free of gecko droppings can mitigate this risk.

Are Geckos Dangerous?

Geckos are generally not dangerous. They are small, harmless creatures that pose no significant threat to humans or pets. Their primary defense mechanism is to drop their tails when caught by predators, which is a natural response to escape and survive. This self-amputation, known as autotomy, does not harm humans in any way.

Geckos and Disease Transmission

There is a minimal risk of disease transmission from geckos to humans. While geckos can carry bacteria such as Salmonella, the risk of transmission is low if proper hygiene practices are followed. It is advisable to wash your hands thoroughly after handling geckos or cleaning up after them to avoid any potential health issues.

Are Geckos Venomous?

Geckos are not venomous. Unlike some reptiles, geckos do not produce venom to subdue their prey. They rely on their agility and speed to catch insects. Therefore, there is no risk of venom-related harm from geckos.

Are Geckos Poisonous?

Geckos are not poisonous. They do not secrete toxins or possess any poisonous characteristics that could harm humans. Their primary defense mechanisms are limited to fleeing and, in some cases, vocalizations to startle predators.

Benefits of Having Geckos Around

Having geckos in and around your home can be beneficial. Here are some reasons why:

Pest Control

Geckos are natural pest controllers. Their diet consists mainly of insects such as mosquitoes, flies, and cockroaches. By having geckos around, you can reduce the population of these pests, which in turn can lead to a more comfortable living environment.

Environmental Indicators

Geckos can act as indicators of a healthy environment. Their presence often signifies a balanced ecosystem where there is an adequate food supply and minimal pollution. Observing geckos in your area can be a sign that your environment is relatively healthy.

Gecko Species and Their Characteristics

There are over 1,500 species of geckos worldwide, each with unique characteristics and adaptations. Some of the most common geckos found in homes include the House Gecko, Mediterranean Gecko, and Leopard Gecko. Understanding the differences among these species can further alleviate any concerns about their presence.

House Gecko (Hemidactylus frenatus)

The House Gecko is one of the most commonly encountered geckos in homes. They are small, typically ranging from 3 to 6 inches in length, and have a translucent, pale appearance. House Geckos are nocturnal and thrive in warm, humid environments. They are highly adaptable and can live in urban and rural settings. House Geckos primarily feed on insects, which makes them excellent pest controllers.

Mediterranean Gecko (Hemidactylus turcicus)

The Mediterranean Gecko is another common species found in homes. They are slightly larger than House Geckos and have a more robust build. Their skin is covered with small, bumpy scales, and they exhibit a mottled pattern that helps them blend into their surroundings. Like House Geckos, Mediterranean Geckos are nocturnal and insectivorous. They are also known for their distinctive vocalizations, which can sometimes be heard during the night.

Leopard Gecko (Eublepharis macularius)

The Leopard Gecko is a popular pet species due to its striking appearance and docile nature. Unlike the House and Mediterranean Geckos, Leopard Geckos are not climbers and prefer to stay on the ground. They are characterized by their vibrant, spotted patterns and thick tails. Leopard Geckos are native to arid regions and have adapted to a diet of insects and small invertebrates. Their calm demeanor and ease of care make them a favorite among reptile enthusiasts.

Coexisting with Geckos: Tips for Homeowners

If you have geckos in your home and wish to coexist with them, here are some tips to ensure a harmonious relationship:

Create a Gecko-Friendly Environment

To make your home more accommodating for geckos, consider the following:

Provide Access to Water: Geckos need access to water for hydration. Ensure there are small water sources available, such as shallow dishes.

Reduce Pesticide Use: Avoid using pesticides that could harm geckos. Opt for natural pest control methods that do not pose a risk to these beneficial reptiles.

Maintain a Steady Temperature: Geckos thrive in warm environments. Keeping your home at a stable temperature can help them stay comfortable.

Avoid Handling: Unless absolutely necessary, avoid handling geckos. They can become stressed and may drop their tails as a defense mechanism.

Limit Disturbances: Try to limit disturbances in areas where geckos are known to reside. This will help them feel safe and reduce the likelihood of them fleeing.

Regular Cleaning and Maintenance

Keeping your home clean is essential for coexisting with geckos:

Clean Droppings Promptly: Gecko droppings should be cleaned promptly to maintain hygiene and reduce any potential allergic reactions.

Seal Entry Points: If you prefer not to have geckos inside your home, seal entry points such as cracks and gaps in doors and windows to prevent them from entering.

The Ecological Importance of Geckos

Geckos play a vital role in the ecosystem. They help maintain the balance of insect populations, which can prevent the overpopulation of pests that may damage crops and spread diseases. By controlling these populations, geckos contribute to a healthier environment.

Predators of Geckos

In the wild, geckos face several predators, including birds, snakes, and larger reptiles. Their ability to camouflage and their nocturnal habits help them avoid these threats. Understanding the natural predators of geckos can provide insight into their behavior and the challenges they face in their natural habitats.


In conclusion, geckos are harmless, non-venomous, and non-poisonous reptiles that can coexist peacefully with humans. They play a beneficial role in controlling pest populations and can be indicators of a healthy environment. By understanding their behavior and taking simple measures to coexist with them, we can appreciate the presence of these fascinating creatures without fear.

If you like to know more about wildlife, specially about the wildlife located in Texas, At Critter Stop we have created a lot of articles full of information that you will definitely enjoy. Check out our latest entry in our blog and discover amazing facts about wildlife. 

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Lee Gorman
Lee Gorman
13:50 21 Nov 22
I’d give a 10 star review if I could! We had a great experience with Critter Stop. Everyone I dealt was friendly, professional, and reassuring. Phillip was very helpful and knowledgeable about the work he was doing. He walked me around the entire house to make sure I saw and understood the services he provided. He was also really nice and answered all my questions — he is exactly the type of person that should be interacting with customers.I love the fact that they will come back for up to 1 year after installation if any problems occur — this shows me they stand behind their work.The owner was great too, he personally came to my house and walked me through their offering. I recommend critter stop to anyone and everyone!
Susan Casey
Susan Casey
14:53 15 Nov 22
Critter Stop is a fantastic business! Everyone involved is extremely professional and very easy to communicate with. Chisam, the owner, did a great job of explaining the process to get the squirrels out of my attic during the initial free estimate. The exclusion crew who did all of the initial work was fabulous. The crew consisted of Phillip, Nick and Corey who arrived promptly when they said they would. They are happy, positive employees. Everyone is very polite and patient in explaining their work and answering questions. They came back several times to check the traps and finish it off with the fogging. Lester was very good about following up to schedule each trap check with me, and the office staff who took care of the billing was very efficient. Critter Stop is a well run company with honest, trustworthy employees! Thank you to all of you who worked hard to make my attic critter free and for the peace of mind that you guarantee your work. Great to know I can call them if for some reason a squirrel figures out a way to get back in!
Karen Eckholdt
Karen Eckholdt
14:54 22 Sep 22
Critter Stop has made this project easy and extremely professional from start to finish! They are very detailed and competent from start to finish and know so much about their business. They made a problem easy for us and at a reasonable cost. We would be happy to recommend this company and their owners and staff to anyone.
Aaron Echols
Aaron Echols
13:51 03 Aug 22
The guys at Critter Stop responded quickly, were very friendly, and gave us an honest estimate of what we might need. They explained why some items on other quotes were or were not necessary. They communicated well to get us scheduled, and did the work well and quickly. Great service at a fair and competitive price.
Jacob Scribner
Jacob Scribner
19:23 27 Jul 22
Brandon and his other coworker Gavin came to install insulation in my attic. I am very grateful for the hard work and professionalism. My house feels a lot better with the insulation installed. 5 star review. Cory Leach was also very nice and helpful. He came to my house to do another job and was very attentive and professional. Thank you Corey and thank you Critter Stop for helping me.The owner very polite and helpful, I’m glad I found this company to help me.
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