Many Singapore parents would rather reach for a natural mosquito repellent than a chemical one, especially for young children. It is an understandable instinct, but in a country where dengue is a year-round concern, it helps to know what the official guidance says actually works. This guide covers which repellents the National Environment Agency recommends, what to make of plant-based products, how to protect babies and toddlers, how to apply repellent safely, and how to stop mosquitoes breeding at home in the first place.

Bite prevention in Singapore has two halves. One is personal protection: repellent, clothing and nets. The other is the home itself, because the Aedes mosquito that spreads dengue breeds in small pockets of clean, stagnant water, often within a few metres of where it bites.

We also explain the symptoms of dengue and when to see a doctor. The health information here is general guidance from official sources and is not medical advice. If anyone in your family feels unwell, see a doctor, and call 995 in an emergency.

Why bite prevention matters in Singapore

NEA describes the Aedes mosquito as mainly day-biting, which surprises many families who only think about mosquitoes at dusk. On its Stop Dengue Now page, NEA recommends sleeping under a mosquito net, especially during the day, and notes that even a small amount of clean, stagnant water can allow mosquitoes to breed.

That has practical consequences for homes with babies who nap in the afternoon, children who play at the void deck after school, and elderly relatives who rest by an open window. Bites happen in ordinary daytime routines, not just on evening walks at the park connector.

Which repellent ingredients NEA recommends

NEA’s guidance on the use of mosquito repellents names three registered active ingredients for repellents applied to skin or clothing:

DEET (N,N-diethyl-m-toluamide)
Picaridin, also called icaridin
IR3535

These come as sprays, lotions, creams and wipes. NEA advises choosing a product based on how long you need protection, where you will be and the protection time stated by the manufacturer. HealthHub’s page on insect repellents adds that for DEET, a concentration of 20% or more is recommended, with higher concentrations lasting longer.

Look for the NEA registration mark

Products registered with NEA carry a registration logo and number, which means they have been assessed for safety and efficacy. NEA publishes a list of registered products on its website. Checking the label for this mark is the simplest way to know you are buying something that has been evaluated.

Coils, vaporisers and other spatial repellents

Coils, electric vaporisers, mats and passive emanators work on the air around you rather than on skin. NEA lists their active ingredients as metofluthrin, transfluthrin, prallethrin, d-allethrin and d-trans allethrin, and notes that protection depends on the product and conditions such as wind. If you use them indoors, follow NEA’s safety points: never leave coils or vaporisers unattended, avoid breathing the fumes up close or for long periods, keep the room ventilated, and keep them away from children, food and animal feed.

Does a natural mosquito repellent work?

This is where the official guidance is clear. NEA states that citronella, eucalyptus and other essential oils are not as effective, and that studies show DEET, picaridin and IR3535 generally give longer-lasting protection. The government’s Stop Dengue Now explainer also notes that plant-based repellents usually need more frequent application.

Three further points are worth knowing before you buy a mosquito natural repellent product:

Botanical products are not assessed by NEA. NEA notes that botanical repellents such as citronella or eucalyptus do not need NEA registration, so they have not been through the same safety and efficacy assessment as registered products.
“Natural” does not mean gentle. Essential oils can irritate skin. Do a small patch test first and stop if a rash appears, just as you would with any repellent.
Oil of lemon eucalyptus is a separate case. HealthHub lists it, alongside DEET, picaridin and IR3535, among ingredients that give reasonably long-lasting protection. It is not the same as plain eucalyptus oil, so read the label carefully and follow its age guidance.

The most genuinely natural protection is physical. Light-coloured long sleeves and long trousers, mosquito nets, window and door screens, and removing stagnant water around the home all reduce bites without putting anything on skin. For a family in a dengue cluster area, these work best alongside an effective registered repellent, not instead of it.

Repellent for babies and young children

Children are where most families have questions, and the guidance is cautious.

Under 2 months: HealthHub says most repellents are only suitable for children over 2 months old. For younger babies, use a mosquito net fitted snugly over the cot, pram or carrier.
Under 2 years: NEA advises using physical protection such as mosquito nets or protective clothing where possible.
Any age: always check the age guidance on the product label, as it varies between products.

When you do use repellent on a child, an adult should always apply it. HealthHub advises putting it on your own hands first and then onto the child, and avoiding the child’s hands, because children put their hands in their mouths and eyes. Keep repellents, coils and vaporisers out of children’s reach. If a child swallows repellent, seek medical advice immediately.

Our guide to mosquito bites on babies covers soothing bites and spotting infection, and if you are heading outdoors in the day, our article on sun protection for babies explains how to combine sunscreen and covering up.

How to apply repellent safely and when to reapply

These steps follow NEA and HealthHub guidance:

Patch test first. If you or your child have not used a product before, try it on a small area of skin and stop if there is a reaction.
Sunscreen goes on first. If you need both, apply sunscreen, then repellent.
Use just enough. Cover exposed skin or clothing evenly. More does not mean better protection.
Spray from about 15 cm away. Do not spray into the air or directly at the face.
Do the face by hand. Spray onto your hands, rub onto the face, and avoid the eyes and mouth.
Skip broken skin. Do not apply over cuts, wounds, burns or irritated skin.
Wash your hands afterwards with soap and water.
Reapply according to the label. Sweat, swimming and rubbing against clothing reduce protection, which matters in Singapore’s heat.
Wash it off indoors. HealthHub advises washing treated skin with soap and water when you come home, and washing treated clothing before wearing it again.

If repellent gets into the eyes, rinse with running water. Stop using a product and see a doctor if there is a rash or irritation. Swelling of the face, eyes, lips or tongue, difficulty breathing or an itchy rash all over the body can signal a serious allergic reaction: stop using the product and see a doctor immediately, and call 995 if there is difficulty breathing or swelling of the face or throat.

Stop mosquitoes breeding at home with B-L-O-C-K

Repellent protects a person for a few hours. Removing breeding spots protects the whole household. NEA’s Mozzie Wipeout steps, known as B-L-O-C-K, should be done at least once a week:

Break up hardened soil in plant pots.
Lift and empty flowerpot plates.
Overturn pails and wipe their rims.
Change water in vases.
Keep roof gutters clear and place BTI insecticide in them.

Roof gutters mean working at height. Check them only from the ground or a stable ladder with a second adult holding it, never ask a helper to climb onto a roof or lean out of a window, and get a contractor in if the gutters cannot be reached safely.

Around a typical HDB flat or condo, also check the dish rack tray, the fridge drip tray, pet water bowls, toys left on the balcony, and any floor trap where water can pool. Our guide to dengue prevention at home walks through a full weekly checklist, and our article on cleaning a balcony covers drains and plant areas.

If your estate is in a dengue cluster, NEA also asks residents to follow S-A-W: spray insecticide in dark corners around the house, apply insect repellent regularly and wear long sleeves and long pants. When using any household insecticide, follow the label, ventilate the room, keep it away from food, keep children and pets away until it has settled, and never mix chemical products.

If you have a helper, B-L-O-C-K fits naturally into a weekly cleaning routine. Show her where water collects in your home and agree a fixed day to check. Please note that Femme5 does not provide pest control or fogging. For a persistent problem, contact your town council or managing agent, or a licensed pest control company.

Dengue symptoms and when to see a doctor

The government’s guidance on what to do when you have dengue lists common symptoms including fever, headache with pain behind the eyes, muscle and joint aches, rashes, poor appetite, and nausea and vomiting. It also lists warning signs that the infection is getting worse, such as persistent vomiting, bleeding gums, abdominal pain, and feeling extremely tired or listless.

See a doctor promptly if anyone in the family has a sudden high fever, especially with any of the symptoms above.
Seek urgent care at once if warning signs appear, even if the fever is coming down.
Call 995 for an emergency, such as difficulty breathing, fainting or confusion.

Babies and young children cannot describe how they feel, so a fever in a young baby always needs a doctor. If someone in your home has suspected or confirmed dengue, keep using repellent on them. The government’s Block Dengue tips explain that this stops mosquitoes from carrying the virus to others in the household.

Frequently Asked Questions

Are plant-based repellents safe and effective for my family?

NEA says citronella, eucalyptus and other essential oils are not as effective as repellents containing DEET, picaridin or IR3535, and botanical products do not need NEA registration, so for dengue protection the official advice is to choose an NEA-registered product and patch test it first.

Can I use repellent on my newborn?

HealthHub says most repellents are only suitable for children over 2 months, so for younger babies use a mosquito net fitted snugly over the cot or carrier, and NEA recommends physical protection such as nets and clothing for children under 2 where possible.

How often should I reapply repellent?

Reapply according to the product label, and sooner after sweating, swimming or towelling off, because NEA notes that water, sweat and rubbing against clothing all reduce protection.

Do I put sunscreen or repellent on first?

Put sunscreen on first and repellent on top, which is the order both NEA and HealthHub recommend.

Conclusion

Plant-based products appeal to many parents, but the official guidance is consistent: registered repellents with DEET, picaridin or IR3535 protect longer and more reliably, especially against day-biting Aedes mosquitoes. Pair them with long sleeves, nets for babies, and a weekly B-L-O-C-K routine at home, and you cut the risk of dengue far more than any single product could. Know the symptoms, and see a doctor early if a fever appears.

A clean, uncluttered home with no forgotten pools of water is one of the best defences you have. If time is short, you can book an hourly home cleaner through us or arrange a one-off deep clean. Contact Femme5 for a quote.

The Femme5 Team
Home cleaning team, Femme5 Agency
Femme5 provides part-time home cleaning, deep cleaning and post-renovation cleaning for HDB flats, condominiums and landed homes across Singapore.

Femme5 Cleaning Team

Written by the home cleaning team at Femme5 Agency Pte Ltd, which provides part-time home cleaning, deep cleaning and post-renovation cleaning across Singapore.

Natural Mosquito Repellent or DEET? What Singapore Families Should Use