Is DEET / Bug Spray Safe During Pregnancy?
Published June 29, 2026 | By SafeMama Editorial Team | Editorial policy
The short answer: Yes. The CDC, the EPA and ACOG all consider DEET safe during pregnancy at concentrations up to about 30%. Avoiding bug spray is usually a bigger risk than using it — mosquito-borne diseases like Zika and West Nile carry pregnancy-specific risks.
Why DEET is recommended
DEET (N,N-diethyl-meta-toluamide) is the most studied insect repellent in the world, with safety data going back to the 1950s. The EPA has reviewed it multiple times. Studies in pregnant women in malaria-endemic regions, including in the second and third trimester, have not found increased risk of birth defects or developmental issues.
Concentration guidance
| DEET % | Approximate protection |
|---|---|
| 7–10% | ~2 hours |
| 15–20% | ~4–5 hours |
| 25–30% | ~6+ hours |
Higher concentrations last longer but do not work better at a single moment. Pick the lowest concentration that covers the time you'll be outside.
Picaridin: the other CDC-recommended option
Picaridin (also called icaridin) is the other repellent the CDC recommends. It is:
- As effective as DEET in head-to-head studies
- Odourless
- Does not damage plastics, watches or fabrics like DEET
- Considered safe in pregnancy
Picaridin is widely sold in concentrations of 10–20%.
What to skip
- Oil of Lemon Eucalyptus (OLE) and PMD — the CDC advises against use in children under 3 and many providers extend that caution to pregnant people due to limited pregnancy-specific data
- Citronella candles and wristbands — not effective enough to prevent disease-carrying mosquito bites
- DIY essential-oil sprays — unstudied effectiveness against disease-carrying mosquitoes; some essential oils are not recommended in pregnancy
How to apply repellent safely
- Apply to exposed skin and clothing, not under clothes
- Avoid eyes, mouth and cuts. Spray on hands and apply to face — do not spray face directly
- Use the lowest concentration that lasts as long as you need
- Reapply only when bites start, not continuously
- Wash off when you come back indoors
- For sunscreen + repellent: apply sunscreen first, repellent second (and repeat as needed)
When repellent matters most
- Travel to areas with Zika, malaria, dengue, chikungunya or West Nile virus
- Outdoor evenings in mosquito season
- Camping, hiking or being near standing water
Scan any bug spray with SafeMama
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