A side-by-side comparison of the four most popular insect repellents based on CDC recommendations, independent testing, and field research. Covers effectiveness, duration, safety, and best use cases for each option. Stop guessing which repellent to buy - this guide gives you the data.
Mosquitoes, ticks, biting flies, chiggers, gnats, no-see-ums. Effectiveness varies significantly by product and concentration.
See individual product pages for specific brand recommendations: DEET | Picaridin | OLE | Citronella
All CDC-recommended repellents (DEET, picaridin, OLE, IR3535) have excellent safety records when used as directed. Citronella is the safest but least effective option.
The definitive comparison:
| Factor | DEET | Picaridin | OLE/PMD | Citronella |
|---|---|---|---|---|
| CDC Recommended | Yes | Yes | Yes | No |
| Mosquito protection | Excellent (8+ hrs at 30%) | Excellent (8-14 hrs at 20%) | Good (6 hrs at 30%) | Fair (1-2 hrs) |
| Tick protection | Good | Good at 20% | Good | Poor |
| Odor | Chemical smell | Nearly odorless | Pleasant lemon | Pleasant citrus |
| Skin feel | Oily/sticky | Light, non-greasy | Light | Light |
| Damages gear | Yes (plastics, synthetics) | No | No | No |
| Children | 2+ months (30% max) | 2+ months | 3+ years only | Any age |
| Plant-based | No (synthetic) | No (synthetic) | Yes | Yes |
| Malaria/tropical use | Gold standard | Recommended | Limited data | Not recommended |
| Cost per hour of protection | Low | Low | Moderate | High (frequent reapply) |
Bottom line recommendations:
Best overall: Picaridin 20% - excellent protection, odorless, no gear damage, same efficacy as DEET. Our top recommendation for most people.
Best for extreme conditions: DEET 25-30% - the most researched repellent in history with decades of tropical disease prevention data. Choose this for travel to malaria/dengue zones.
Best natural option: Oil of Lemon Eucalyptus 30% - the only plant-based repellent CDC-recommended as comparable to synthetic options. Not for children under 3.
Best for casual use: Citronella candles and spatial repellents for backyard entertaining where complete protection is not critical.
Maximum protection (outdoor workers, endemic areas): Picaridin or DEET on skin + permethrin-treated clothing. This combination is the CDC/military standard. See our permethrin clothing guide.