Why Mosquitoes Go Away with Citronella: Effective but Limited
Mosquitoes are notorious for their biting behaviors, which can be a nuisance during outdoor activities. One common question people ask is why mosquitoes go away when exposed to citronella. This article explores the science behind citronella's effects, its sources, and its limitations as a mosquito repellent.
How Citronella Works
Mosquitoes are repelled by citronella because it contains compounds that mask scents like carbon dioxide and body odor, which attract them. Citronella oil is derived from certain species of lemongrass, and its strong citrus-like aroma is unpleasant to mosquitoes. When applied via candles, sprays, or oils, citronella creates a scent barrier that can confuse or deter mosquitoes from approaching.
The Source and Effectiveness of Citronella
There are many natural plants and substances that can repel mosquitoes, and one such plant is the citronella plant, known scientifically as Cymbopogon nards. This plant is a member of the geranium family and resembles prickly ferns. The essential oil extracted from these plants has mild and short-term insect repellent qualities when applied to the skin. According to Edward Walker, a mosquito researcher at Michigan State University, citronella can have some medicinal properties that protect against various bug bites.
Application and Limitations of Citronella
While mosquito-repelling products containing citronella can be effective, their repellent properties are generally short-lived. Frequent application or refilling is often necessary for sustained protection. For example, when using citronella oil, you’ll need to reapply it as directed to maintain its effectiveness.
Coils that burn like incense are effective outdoors but are not recommended for indoor use or around cats because they can harm their lungs. Choosing the right product and application method is crucial for maximizing its effectiveness.
Other Natural Mosquito Repellents
Mosquitoes are also deterred by strong odors from repellants and plants that give off a powerful aroma. These include Marigolds, Catnip, Basil, and Lavender. The science behind their effectiveness lies in the volatile oils they contain, which carry an intense aroma detected by scent organs in the antennae or nasal organs of mosquitoes. If the odor is strong enough, it can override the target odors and mask human scents.
A Tomato for Thought
The efficacy of citronella can vary depending on the application method and environment. For instance, in a heavily infested area, such as a pup tent, citronella might not be as effective. I've personally used citronella oil in such environments and found it to be quite ineffective. Cloth soaked in the oil and hung at the entrance of a tent offered no deterrent effect, and we were still heavily bitten inside the tent.
While citronella can be a useful tool in managing mosquito populations, it should not be relied upon as the sole method of protection. Combining it with other natural repellents and using it in conjunction with proper application techniques can enhance its effectiveness.
Conclusion
Although citronella has been effective as a mosquito repellent for years, it is not a foolproof solution. Understanding the science behind its effectiveness and the conditions under which it works best can help you make better choices when protecting yourself from mosquito bites. Whether you choose citronella or other natural repellents, consistent use and application are key to successful mosquito control.