Updated: June 9, 2023

Midges, also known as no-see-ums or biting midges, are small flying insects that are often found near bodies of water. These tiny creatures can be a major nuisance as they often swarm in large numbers and are known for their painful bites. But how do midge infestations spread?

Understanding Midge Behavior

To understand how midge infestations spread, it’s important to first understand the behavior of these insects. Midges are attracted to light and carbon dioxide, which means they are often found near homes and buildings. They are also drawn to stagnant water, such as ponds, lakes, and swamps, where they lay their eggs.

Midges are most active during the dawn and dusk hours, but they can also be active during the day if the weather is overcast or cloudy. They tend to swarm in large numbers, making them difficult to avoid.

Factors That Contribute to Midge Infestations

There are several factors that contribute to midge infestations, including:

Weather Conditions

Midges thrive in warm, moist environments. During hot and humid weather, midges are more likely to breed and multiply. This is why midge infestations are most common during the summer months.

Proximity to Water

As previously mentioned, midges lay their eggs in stagnant water. If you live near a body of water that is not regularly maintained or cleaned, you may be more susceptible to a midge infestation.

Outdoor Lighting

Midges are attracted to light, which means outdoor lighting can attract them to your home or property. If you have outdoor lighting near a body of water or in an area where midges are present, it may contribute to an infestation.

How Midge Infestations Spread

Midge infestations can spread quickly and easily, especially if the conditions are right. Here are some of the ways that midge infestations can spread:


Midges are small and lightweight, which means they can easily be carried by the wind. If there is a large population of midges in one area and the wind picks up, they can quickly spread to nearby neighborhoods and properties.


As previously mentioned, midges lay their eggs in stagnant water. If there is a body of water near your home that is infested with midges, they can easily spread to your property. This can happen if the wind blows the midges or their eggs onto your property or if they fly to your property from the water source.

Movement of People and Animals

Midges can also be spread through the movement of people and animals. If you visit an area that is infested with midges, you may unknowingly bring them back to your home on your clothing or belongings. Similarly, if you have pets that spend time outdoors, they may bring midges into your home.

How to Prevent Midge Infestations

Preventing midge infestations is key to avoiding the painful bites and annoyance that these insects can cause. Here are some tips for preventing midge infestations:

Remove Standing Water

If you have any standing water on your property, such as in bird baths or flower pots, be sure to remove it regularly. This will prevent midges from laying their eggs on your property.

Use Outdoor Lighting Wisely

If you have outdoor lighting, use it wisely. Avoid placing lights near bodies of water or in areas where midges are present.

Wear Protective Clothing

If you plan on spending time outdoors in an area where midges are present, wear protective clothing such as long sleeves and pants. You can also use insect repellent to help keep midges away.

Regularly Clean Gutters and Downspouts

Gutters and downspouts can collect stagnant water, which is a prime breeding ground for midges. Be sure to clean them regularly to prevent an infestation.


Midge infestations can be a major nuisance, but with the right precautions, they can be prevented. By understanding midge behavior and the factors that contribute to infestations, you can take steps to protect your home and property from these tiny pests. Remember to remove standing water, use outdoor lighting wisely, wear protective clothing, and regularly clean gutters and downspouts to prevent midge infestations.