Stopping No-See-Um Insects: An In-Depth Guide to Biting Midge Control

Understanding Biting Midges: Introduction

Biting midges, or no-see-um insects, are tiny flies that are a nuisance to humans and animals alike. Their name “no-see-um” is derived from their nearly invisible appearance, making them difficult to detect until it’s too late. Understanding these biting midges, their habitats, behaviors, and ways to control them, is essential for anyone spending time outdoors, especially in damp and humid environments where they thrive.

What Are Biting Midges?

Biting midges, belonging to the Ceratopogonidae family, are small flies that are usually less than 1/8 inch in length. Though minute in size, their painful bites can cause significant discomfort.


Their tiny size and translucent body make them almost invisible to the naked eye. Biting midges have characteristic wings with a hairy appearance and segmented antennae.


Biting midges are found globally, particularly in coastal, marshy areas, or near bodies of water. They thrive in moist soils where they lay their eggs.

Feeding Habits

The female midges are the ones responsible for biting, as they need blood meals to lay eggs. They are attracted to carbon dioxide and heat emitted by hosts, which can be mammals, birds, or reptiles.

Health Concerns Associated with Biting Midges

Biting midges can cause various health issues, ranging from mere annoyances to potential transmission of diseases.

Itchy Bites

The bites of no-see-um insects cause small, red, and itchy welts. The itching can be intense, and scratching can lead to secondary infections.

Allergic Reactions

In some individuals, the bites can cause allergic reactions, leading to more significant swelling and prolonged discomfort.

Transmission of Diseases

In some regions, biting midges are known to transmit diseases to animals, such as the Blue Tongue virus in livestock. However, the transmission of diseases to humans is less common.

Methods to Prevent Biting Midges

Understanding the life cycle and behavior of biting midges is crucial in devising effective prevention strategies.

Physical Barriers

Screening windows, doors, and outdoor areas with fine mesh can physically prevent midges from entering living spaces. Protective clothing can also limit their access to skin.


Insect repellents containing DEET or other proven ingredients can deter biting midges. Applying these repellents to exposed skin can reduce the likelihood of bites.

Environmental Control

Reducing breeding sites by managing standing water and moisture can make an environment less hospitable to midges. Proper drainage and moisture control in gardens and around homes are essential.

Trap and Kill

There are specific traps designed to attract and kill biting midges. These traps often use light or carbon dioxide to lure the insects and then trap or electrocute them.

Understanding Behavior Patterns of Biting Midges

Biting midges have specific behavior patterns that can be utilized in control strategies.

Active Times

Biting midges are most active during dawn and dusk. Avoiding outdoor activities during these peak times can reduce exposure.

Weather Preferences

These insects prefer calm, humid conditions and are less active in windy or dry weather. Understanding local weather patterns can help in predicting their activity.

Attraction to Light

Biting midges are attracted to lights, so reducing outdoor lighting or using specialized bulbs that do not attract insects can limit their presence.

Adopting an Integrated Control Approach

Combating biting midges requires an integrated approach that combines understanding their biology with employing physical, chemical, and environmental control measures. Collaboration with local pest control experts may also provide insights into region-specific behaviors and control methods.

By understanding the biology, behavior, and health concerns associated with biting midges, individuals can take proactive steps to reduce their impact. Utilizing a combination of prevention, deterrents, and environmental management, one can create a comprehensive strategy to minimize the discomfort and potential health risks posed by these nearly invisible, yet painfully present insects.