DEET vs Picaridin: Which Mosquito Repellent Is Better?
When you’re standing in the pharmacy aisle in Singapore, the two names you’ll see most on insect repellents are DEET and picaridin. Both are proven, effective and widely recommended — so which should you choose? Here’s an honest comparison of the DEET mosquito repellent versus picaridin on effectiveness, safety and feel, so you can pick the right one for your family and Singapore’s Aedes mosquitoes.
DEET vs Picaridin at a Glance
| Factor | DEET | Picaridin |
|---|---|---|
| Effectiveness | Highly effective, long track record | Comparable effectiveness at similar strengths |
| How long it lasts | Longer at higher concentrations | Long-lasting; often pleasant to reapply |
| Feel and smell | Can feel oily; distinct odour | Usually odourless, lighter feel |
| Effect on plastics | Can damage plastics and some synthetics | Doesn’t damage plastics |
| Suitability for kids | Use lower concentrations; follow age guidance | Often preferred for children, less irritating |
Both work. The choice often comes down to feel, smell and what you’re wearing or carrying.
The DEET Mosquito Repellent
DEET is the most established mosquito repellent in the world, used for decades and backed by extensive research. A DEET mosquito repellent is highly effective against Aedes and other biting mosquitoes, and higher concentrations last longer (concentration affects *duration*, not how strong the protection is at a given moment).
Things to know about DEET:
- Very effective and long-lasting — a solid choice for high-risk situations and longer outdoor periods.
- Can feel oily and has a noticeable smell, which some people dislike.
- Can damage plastics and synthetics — keep it away from spectacle frames, watch straps and some fabrics.
- For children, use lower concentrations and follow the label; it’s generally not advised for the youngest infants.
Picaridin
Picaridin is a newer active that performs comparably to DEET while being more pleasant for everyday use.
- Effective and long-lasting at similar concentrations.
- Usually odourless and lighter on the skin — nice for daily wear.
- Doesn’t damage plastics, so it’s friendlier with gear and glasses.
- Often chosen for children as it tends to be less irritating, though you should still follow the label’s age guidance.
Which Should You Choose in Singapore?
For Singapore’s climate and the dengue/Zika risk from Aedes mosquitoes, both are excellent. A practical way to decide:
- For long outdoor stretches (hikes, gardening, sports): either works; DEET is a dependable workhorse.
- For daily use and comfort: picaridin’s lighter feel and lack of smell often win.
- For children: many parents prefer picaridin, but lower-concentration DEET is also acceptable per the label. See our guide on mosquito repellent for babies and kids.
- For protecting gear and glasses: picaridin, since it won’t damage plastics.
Whichever you pick, apply it correctly: cover exposed skin, reapply per the label, avoid cuts and the eye area, and wash it off indoors.
How to Apply Either One Properly
Even the best active ingredient fails if it’s applied poorly. Get the basics right:
- Cover all exposed skin evenly — mosquitoes will find any patch you miss.
- Reapply per the label, especially after sweating heavily or swimming.
- Apply sunscreen first, let it absorb, then apply repellent on top.
- Avoid the eyes, mouth and any broken or irritated skin.
- Spray onto your hands first when applying to your face or to a child.
- Wash it off once you’re back indoors for the evening.
Concentration affects how *long* protection lasts, not how strong it is at any moment — so for a short outing a lower concentration is fine, while a long day outdoors calls for a higher one or more frequent reapplication.
Repellent Is Only Half the Job
Skin repellent protects *you* when you’re out — but it does nothing about the mosquitoes around your home. For lasting protection in Singapore, combine repellent with two things:
- Stop mosquitoes breeding — clear stagnant water weekly. See how to prevent mosquito breeding.
- Keep mosquitoes out — fit window insect screens so you don’t need repellent indoors, and rely on screens and nets for sleeping areas.
This layered approach reduces how much repellent you need at all.
When to Call a Professional
If mosquitoes keep getting into your home despite screening and repellent, there may be a breeding source nearby. Professional mosquito control in Singapore can find and treat it so you’re better protected.
What About “Natural” Alternatives?
Alongside DEET and picaridin you’ll see plant-based options on the shelf, most often oil of lemon eucalyptus and citronella-based products. Where do they fit?
- They can work, but usually for shorter periods. Plant-based repellents tend to need more frequent reapplication than DEET or picaridin to keep up protection.
- Effectiveness varies more. Formulation and concentration matter a lot, so results are less consistent than the two established actives. Our guide on whether natural mosquito repellents work sets realistic expectations.
- They’re a reasonable choice for low-risk, short outings — but for a long day outdoors or a dengue-prone area, a proven active is the dependable pick.
If you’re comparing the whole field rather than just these two, our roundups of the best mosquito repellent in Singapore and the broader best insect repellent in Singapore put the options side by side.
Frequently asked questions
Is DEET or picaridin more effective?
Does a higher concentration mean stronger protection?
Which is better for children?
Can I apply repellent over sunscreen?
Related guides
- Best mosquito repellent in Singapore
- Best insect repellent in Singapore
- Mosquito repellent for babies and kids
- Do natural mosquito repellents work?
- How to prevent mosquito breeding
*Want fewer mosquitoes to repel in the first place? Get a free assessment from our mosquito control team.*
