Mosquitoes Are Looking for Your CO₂. Can You Use That Against Them?

Mosquitoes have a frustrating ability to find us when we're trying to enjoy a summer evening outdoors. But what if one of the signals they use to find you could actually be used to attract them somewhere else?

Carbon dioxide (CO₂) is one of the signals mosquitoes use to help locate people and other animals. That's why CO₂ is used in certain mosquito traps to attract mosquitoes toward a device designed to capture them.

Why Are Mosquitoes Attracted to CO₂?

People and animals release carbon dioxide every time they breathe. Mosquitoes can detect CO₂ and use it as one of several cues that help them locate a potential host.

In simple terms, when a mosquito detects CO₂, it may be a sign that a person or animal is nearby.

CO₂ isn't the only signal mosquitoes respond to. Body heat, odours and other environmental cues can also play a role.

That's why a CO₂ mosquito trap is more than just a cylinder releasing gas. The CO₂ is used as an attractant, while the trap itself is responsible for capturing the mosquitoes.

How Does a CO₂ Mosquito Trap Work?

A CO₂ mosquito trap releases carbon dioxide in a controlled manner to attract mosquitoes toward the device.

When mosquitoes get close, the trap can use a fan, suction system or another capture mechanism to draw them inside.

The basic idea is simple:

CO₂ attracts the mosquitoes. The trap captures them.

Simply releasing CO₂ outdoors won't get rid of mosquitoes. It needs to be part of a properly designed mosquito-trapping system.

Some traps may also use other attractants, such as heat, light or specialized lures.

Why Use a CO₂ Cylinder?

For mosquito traps designed to use compressed CO₂, a cylinder provides a convenient and controlled source of carbon dioxide.

This can be useful for systems designed to operate for extended periods, where a consistent CO₂ supply is needed.

CO₂ cylinders are already used for many applications, including beer dispensing, soda carbonation, home brewing, planted aquariums and welding. Using CO₂ as part of a mosquito trap is another specialized application.

CO₂ Mosquito Traps vs. Bug Spray

So, is a CO₂ mosquito trap better than bug spray?

Not necessarily. They do different jobs.

Bug spray provides personal protection. You apply insect repellent to yourself or your clothing to help prevent mosquitoes from landing and biting you.

A CO₂ mosquito trap takes a different approach. It is designed to attract and capture mosquitoes in the surrounding area.

One potential advantage of a trap is that it can operate without you having to repeatedly apply repellent. However, a trap shouldn't automatically be considered a replacement for personal protection.

If you're spending time outdoors where mosquitoes are active, insect repellent, appropriate clothing and reducing mosquito breeding areas can still be important.

A CO₂ trap can simply be another tool in your overall approach to dealing with mosquitoes.

Where Should a CO₂ Mosquito Trap Be Placed?

Placement can affect how well a trap works.

Always follow the manufacturer's instructions and consider factors such as wind, airflow, vegetation and where people will be spending time.

The goal is generally to position the trap where it can attract mosquitoes toward the device rather than concentrating mosquito activity directly around the people you're trying to protect.

Is a CO₂ Trap a Complete Mosquito Solution?

No single mosquito-control method is guaranteed to eliminate mosquitoes.

A CO₂ trap can help attract and capture mosquitoes, but mosquito populations are also affected by weather, vegetation and breeding areas.

Reducing standing water around your property is another important step. Even relatively small amounts of stagnant water can provide mosquitoes with places to breed.

For that reason, a CO₂ mosquito trap is best viewed as one part of a broader mosquito-control strategy.

CO₂ Cylinders for Mosquito Traps in Ottawa

If your mosquito trap is designed to use a CO₂ cylinder, keeping a reliable CO₂ supply is an important part of keeping the system running.

Rapid CO₂ provides CO₂ cylinder services in Ottawa and the surrounding area for a variety of applications.

Whether you're using CO₂ for a beverage system, home brewing, aquarium, welding application or a specialized use such as mosquito trapping, having the right CO₂ supply matters.

Need a CO₂ refill? Contact Rapid CO₂ at 613-299-8412.

The Bottom Line

Mosquitoes use carbon dioxide as one of the signals that helps them find potential hosts. CO₂ mosquito traps take advantage of that behaviour by using a controlled CO₂ supply to attract mosquitoes toward a capture device.

Unlike bug spray, which provides personal protection, a CO₂ trap is designed to attract and capture mosquitoes in the surrounding area.

It may not replace bug spray, but for the right outdoor application, a CO₂ mosquito trap can be another useful tool for managing mosquitoes.

Rapid CO₂ — Ottawa, Ontario
613-299-8412