It is a hot topic right now: how to protect yourself against mosquitoes? With the rise of tiger mosquitoes, alongside risks of chikungunya, Zika virus, and dengue fever, it is time to brush up on the essentials of mosquito protection—especially when travelling through tropical regions, hiking, or trekking.
What are the risks?
In 99% of cases, mosquito nuisance comes down to itching and red bumps. However, they remain extremely unpleasant, and individual reactions vary. At best, they can ruin a good night's sleep and cause persistent irritation for days.
While severe cases are rare, they should never be taken lightly:
Chikungunya is a viral disease transmitted to humans by infected mosquitoes. It causes persistent fever and severe arthralgia (joint pain). Other symptoms include muscle pain, headache, nausea, fatigue, and rash. There is no cure for this disease; treatment focuses solely on relieving symptoms.
Dengue is a viral infection also transmitted by mosquitoes. It rapidly causes flu-like symptoms and can occasionally progress to life-threatening complications known as severe or haemorrhagic dengue (most commonly upon secondary infection). The global incidence of dengue has grown dramatically over recent decades. Today, nearly half the world's population is estimated to be at risk.
Dengue fever occurs across tropical and subtropical regions worldwide, particularly in urban and semi-urban settings.
Zika virus disease is caused by a virus transmitted by Aedes mosquitoes. Infected individuals usually develop mild fever, skin rash (exanthema), and conjunctivitis. These symptoms typically clear up within 2 to 7 days. There is currently no specific treatment or vaccine available.
Mosquitoes and ticks carry serious diseases. With limited medical treatments available once infected, robust preventive protection against bites remains your best defence.
How to protect yourself against mosquitoes?
The first rule of defence is avoidance! To minimise contact with mosquitoes, stay clear of damp areas: ponds, marshland, reservoirs, and all standing water. Avoid containers holding stagnant water. Wear full-coverage gear for optimal protection: long sleeves, long trousers, and high socks create an effective physical barrier. Finally, know their peak activity times! Mosquitoes are generally most active at dawn, just before sunrise, and at dusk. However, virus-carrying tiger mosquitoes bite throughout the day, so stay vigilant!
It sounds simple and obvious, but your primary barrier against mosquitoes is your clothing. The more bare skin you leave exposed, the higher your chances of getting bitten: it goes without saying! That said, staying fully covered head-to-toe isn't always easy, but it remains an essential precaution in high-risk areas, during forest hikes, or during peak feeding hours.
General tips
Wear full-coverage clothing in light colours. Dark gear absorbs heat and attracts mosquitoes much more aggressively.
Shower after physical effort, as sweat acts as a powerful attractant for mosquitoes.
Run a fan or air conditioner in equipped rooms, as mosquitoes avoid both breeze and cool air.
Avoid perfumes and scented products, which naturally attract insects.
Pack a mosquito net: you can find pop-up, portable models that form a protective dome over your sleeping mat, tent floor, or bed. It remains the most effective protection in tropical countries—nothing beats it! If you are travelling with young children, it is essential gear: chemical repellents and insecticides are not suitable for babies.
In high-risk areas, fit mosquito nets to windows as well. This advice applies anywhere: you can easily find lightweight mesh screens that fit standard windows.
Skin repellents
Skin repellents are most commonly sold as sprays—take care not to spray directly near eyes or mucous membranes—but are also available as creams and gels.
While repellent brands and options are everywhere, the actual active ingredients are few. Products primarily use DEET (N,N-Diethyl-meta-toluamide), IR3535, Icaridin (Picaridin), plant extracts, citronella, or essential oils. The most effective formulas contain 30% to 50% DEET and are strongly recommended wherever mosquitoes transmit dengue, chikungunya, or malaria.
Manufacturers often make optimistic claims regarding protection duration, advertising 8 hours or more. In real-world conditions, it is consistently less, varying with individual skin chemistry, sweat, and rain. For high-performing products, laboratory tests show an effective duration closer to 4 hours. In practice: reapply as soon as you notice mosquitoes closing in. Simple as that.
Other products
Insecticides
To kill mosquitoes effectively, insecticides rely on targeted chemical compounds. Because these active ingredients can be harsh, they must be used sparingly.
Aerosol sprays containing pyrethroid-based insecticides are exceptionally effective. Check the ingredient label: these active substances typically end in "-thrin" (such as transfluthrin, tetramethrin, etc.).
As a rule, only use insecticide if you spot a swarm of mosquitoes entering a room left open in the evening. Do not use it as a preventative spray throughout the entire house. Above all, stay well clear of the room for at least 15 minutes after spraying.
Plug-in electric diffusers deliver variable results depending on their formulation, although most also utilise pyrethroid active ingredients.
Mosquito coils containing pyrethroid compounds are relatively effective, but they must be used exclusively outdoors and only cover a radius of 1 to 1.5 metres.
Anti-mosquito clothing
Finally, there is an innovative solution that many outdoor enthusiasts have yet to discover, perfectly suited for travel, trekking, or hiking: anti-mosquito clothing, engineered to shield you from insect bites. Several types exist, but one eco-friendly breakthrough stands out: chitin, a naturally occurring molecule derived from crustacean shells, now used as a natural mosquito repellent. A wide range of travel garments come treated with it: shorts, trousers, shirts, and short-sleeved tops.
Not only is this treatment 100% natural and odourless, but it is also completely safe for your skin and requires zero effort. No more worrying about applying sticky lotions or forgetting your spray bottle at base camp. Simply pull on your anti-mosquito gear in the morning and you are protected instantly, with long-lasting efficacy. It forms a highly effective first line of defence against biting insects. Plus, these garments look and feel entirely standard: no scent, no residue, no colour change. Total, invisible protection!
Naturally, you can combine this natural, hassle-free barrier with traditional repellents for maximum protection. Adapt your strategy to the local risk level and mosquito density on the ground!
In any case, this is a highly practical, cost-effective solution (adding minimal cost compared to standard garments) that guarantees long-lasting baseline protection. Imagine heading out for a hiking trip: when your spray wears off after a few hours and needs reapplying, your anti-mosquito clothing continues to repel the most persistent insects, acting as a reliable first line of passive defence.
There is no need for extreme paranoia, but mosquito protection should never be neglected. Basic common sense and the right technical gear are all you need to neutralise most threats. It is the baseline required to maintain comfort and avoid spending your trips dealing with painful, itchy bites. With our practical advice and the right travel clothing, you can focus entirely on enjoying your hikes and travels, even in tropical environments.
