Lemon eucalyptus: a natural mosquito repellent that works

If you've heard about lemon eucalyptus and wondered if it actually keeps mosquitoes away, you’re not alone. Oil of lemon eucalyptus (often shown as OLE) or its active component PMD is one of the few plant-based repellents with solid real-world results. It’s not just a fancy scent—used correctly it can protect you on hikes, backyard nights, and travel.

How to use lemon eucalyptus safely

Buy a product labeled "Oil of Lemon Eucalyptus" or "PMD." Don’t try to use raw essential oil or homemade mixes—those don't have the same effect. Apply to exposed skin according to the label and reapply when it says to. Typical commercial formulas last a few hours between applications; some 30% PMD products can give longer protection than lower-strength sprays.

Do a quick patch test first: put a small amount on your inner forearm and wait 24 hours. If you get redness or itching, skip it. Don’t put OLE on broken skin, near eyes or mouth, or on irritated rashes. You can spray or rub it on clothing, but follow the product label—some recommend against use on certain fabrics.

Children: most health guidelines say not to use oil of lemon eucalyptus on children under 3 years old. For older kids, follow the label and use sparingly. Pregnant or breastfeeding? Talk to your healthcare provider if you’re unsure—many people use it without issue, but your doctor can advise based on your situation.

How it stacks up vs DEET and other repellents

OLE is plant-derived but it's processed to make PMD, which is the part that repels bugs. Compared to DEET, lemon eucalyptus often works well for several hours but may not last as long in heavy mosquito pressure. DEET and picaridin tend to offer the longest single-application protection. If you need long-lasting protection (like deep woods or areas with disease risk), choose a high-protection repellent and follow local health advice.

OLE works best against mosquitoes and many biting flies. Evidence for tick protection is less consistent, so if you’re in tick country, combine repellent use with clothing barriers, permethrin-treated gear, and regular tick checks.

Storage and extras: keep products in a cool, dry place away from direct sun. Check expiration dates—old repellents lose power. If you prefer a natural option for evening backyard use or family trips, lemon eucalyptus is a solid choice, as long as you use a labeled product, follow directions, and pay attention to age limits and skin reactions.

Questions about a specific product or whether OLE is right for a trip? Tell me where you’re going and who’s coming, and I can help pick the best repellent plan.