Short answer: picaridin, DEET, and oil of lemon eucalyptus (OLE) are all recommended by the CDC and all genuinely work — the "best" one depends on you, not on some secret ranking. For most NYC summer use, 20% picaridin is the easy default: it protects as long as DEET, feels far nicer on skin, and doesn't melt plastic or synthetic fabric. Reach for higher-percent DEET when you want maximum staying power in a heavy-mosquito setting, and OLE if you specifically want a plant-derived option. What you should not do is buy anything whose label won't tell you its active ingredient. Let's break down the matchup.
What makes a repellent actually work?
The active ingredient — and the CDC keeps the list short on purpose. It recommends using an EPA-registered insect repellent containing one of these proven actives: DEET, picaridin, oil of lemon eucalyptus (OLE) / PMD, IR3535, or 2-undecanone. "EPA-registered" is the phrase that matters: it means the product was evaluated for both safety and effectiveness when used as directed. Everything in this comparison is on that list. The citronella candles, wristbands, ultrasonic gadgets, and "essential oil" sprays that aren't? They're not on it, and it shows.
One more myth to kill up front: a higher percentage doesn't make a repellent stronger — it makes it last longer. A 20% DEET and a 40% DEET repel the same bugs equally well in the moment; the 40% just keeps working for more hours. So you're choosing duration, not power.
Picaridin: the do-everything default
Picaridin (also spelled icaridin) is a synthetic compound modeled on a molecule in black pepper plants. It's been used widely in Europe and Australia for decades and is now the quiet favorite of a lot of people who used to reach for DEET.
Why people like it:
- Works as long as DEET. At 20%, picaridin gives up to roughly 8–12 hours of mosquito protection — on par with comparable DEET.
- Feels good. No greasy film, no strong chemical smell.
- Doesn't wreck your stuff. Unlike DEET, picaridin won't dissolve plastics, sunglasses frames, watch straps, or synthetic fabrics.
- CDC-recommended and widely considered safe for adults and children when used as directed.
The trade-off: honestly not much for everyday use, which is why it's our default recommendation.
DEET: the heavyweight benchmark
DEET has been the gold standard since the 1950s, and every other repellent gets measured against it. The CDC and EPA both consider it safe and effective when used as directed. If you're heading somewhere with relentless mosquitoes — a buggy campsite, a marshy trail, a backyard backing onto a wetland — higher-concentration DEET is the most battle-tested option there is.
Why people reach for it:
- Maximum proven track record across decades and countless studies.
- Long duration at higher percentages — a ~25–30% DEET can push protection into the all-day range.
The trade-offs:
- Greasy feel and a distinct smell some people dislike.
- It damages plastics and synthetics — keep it off watch faces, phone screens, sunglasses, and performance fabrics.
- Percentages above ~30% offer little extra benefit for the added feel; the CDC notes there's no real upside to very high concentrations for typical use.
Oil of lemon eucalyptus (OLE): the plant-derived option
OLE — and its refined active ingredient, PMD — is the one botanical repellent the CDC actually backs, because unlike most "natural" sprays it has real efficacy data behind it. It's derived from the lemon eucalyptus tree and is a legitimate choice if you want a plant-based product.
Why people choose it:
- CDC-recommended, with effectiveness that can approach lower-concentration DEET.
- Plant-derived, for those who prefer that.
- Pleasant lemony scent to many noses.
The trade-offs:
- Shorter duration — you'll typically reapply more often than with picaridin or DEET.
- Not for kids under 3. The CDC and product labels advise against OLE/PMD for children under three years old. (Picaridin and DEET have no such age floor when used as directed, though always follow the label.)
- "Oil of lemon eucalyptus" the registered repellent is not the same as pure lemon eucalyptus essential oil — only the tested, EPA-registered OLE/PMD product is proven to work.
We don't stock an OLE pick in the shop, but any EPA-registered oil of lemon eucalyptus product from a pharmacy will do the job — just check the label for the OLE/PMD active and the under-3 warning.
Picaridin vs DEET vs lemon eucalyptus: the head-to-head
| | Picaridin (20%) | DEET (~25–30%) | Oil of Lemon Eucalyptus | |---|---|---|---| | CDC-recommended? | Yes | Yes | Yes | | Typical duration | ~8–12 hrs | Up to all-day | Shorter; reapply more often | | Feel / smell | Non-greasy, low odor | Greasy, distinct smell | Oily-ish, lemony scent | | Damages plastics/fabrics? | No | Yes | No | | Kids | OK as directed | OK as directed | Not under age 3 | | Best for | Everyday NYC default | Max protection, buggy trips | Botanical preference |
Which should you buy?
- Just want one bottle for the city? → 20% picaridin. Long-lasting, pleasant, won't ruin your gear.
- Heading somewhere genuinely swarmed (camping, wetlands, a bad backyard evening)? → ~25–30% DEET for maximum staying power.
- Set on a plant-derived option and don't mind reapplying? → an EPA-registered OLE/PMD repellent (we don't stock one — grab it at any pharmacy), but not on toddlers under 3.
- Adding ticks to the mix (trails upstate, tall grass)? → Consider treating clothing with permethrin and wearing a skin repellent — we cover that combo in the gear cornerstone.
Whatever you pick, remember repellent is Level 2. It protects the person wearing it, but it does nothing about the mosquitoes breeding in your yard. The foundation is still dumping standing water — repellent just covers the gap for the bugs that made it to adulthood anyway. Browse the full repellent lineup in the shop if you want to compare formats (lotion vs spray vs wipes).
The bottom line
- All three are CDC-recommended and all work — pick by feel, duration, and who's wearing it.
- Picaridin is the best everyday default: DEET-level duration, none of the grease or plastic-melting.
- DEET wins for maximum staying power in heavy-mosquito conditions.
- OLE is the proven plant-based option — shorter duration, and not for kids under 3.
- Percentage controls duration, not strength. Check the EPA repellent tool if you're stuck.
Player questions
What is the difference between picaridin, DEET, and oil of lemon eucalyptus?
All three are CDC-recommended, EPA-registered mosquito repellents. DEET is the decades-old benchmark with the longest track record but a greasy feel that can damage plastics. Picaridin works about as long as DEET without the grease or plastic damage. Oil of lemon eucalyptus is the one CDC-backed plant-derived option, but it has a shorter duration and isn't for children under three.
Which mosquito repellent is best?
For everyday use, 20% picaridin is the easy default — it lasts as long as DEET, feels non-greasy, and won't melt plastics or synthetic fabrics. Choose higher-concentration DEET when you need maximum staying power in heavily infested areas, or oil of lemon eucalyptus if you specifically want a plant-based product and don't mind reapplying more often.
Is picaridin safe?
Yes, when used as directed. Picaridin is EPA-registered and recommended by the CDC, has been used widely for decades in Europe and Australia, and is considered safe for adults and children following label instructions. Unlike DEET, it doesn't damage plastics or fabrics, which makes it easy to use around gear and phones.
Does a higher percentage of DEET or picaridin work better?
No — a higher percentage lasts longer, it doesn't repel more strongly. A 20% and a 40% product repel mosquitoes equally well in the moment; the higher concentration just keeps working for more hours before you reapply. The CDC notes there's little added benefit to DEET concentrations above about 30% for typical use.
Is oil of lemon eucalyptus the same as lemon eucalyptus essential oil?
No. The CDC-recommended repellent is 'oil of lemon eucalyptus' (OLE) or its refined active ingredient PMD, which is EPA-registered and tested for effectiveness. Pure lemon eucalyptus essential oil sold as aromatherapy is not the same product and is not proven to repel mosquitoes. Also, OLE/PMD should not be used on children under three.
Do I still need to remove standing water if I wear repellent?
Yes. Repellent only protects the person wearing it and does nothing about mosquitoes breeding in your yard. Eliminating standing water weekly stops new mosquitoes from ever hatching, which reduces the whole local population. Repellent is a personal layer on top of that foundation, not a replacement for it.