The best bug spray for Costa Rica is a CDC-recognized active ingredient at a concentration that lasts the day: 20 percent picaridin (Sawyer or Natrapel) for adults, or 8 percent PMD (Superbloc) for the whole family from 6 months and up. Costa Rica has year-round mosquitoes including Aedes aegypti, which can carry dengue. Pack repellent in your checked bag and bring TSA-friendly wipes in your carry-on. Local availability is limited outside major resort areas.
This guide covers what mosquitoes you will actually encounter in Costa Rica, which actives the CDC recommends for the region, what works for family travel with kids, packing rules, and what is realistic to buy locally.
What you are protecting against in Costa Rica
The Centers for Disease Control and Prevention lists Costa Rica as a country with year-round dengue risk, particularly in the Caribbean and Pacific coastal lowlands. Other mosquito-related concerns include:
• (year-round, lowland and coastal areas)
• (sporadic, lower risk than dengue)
• (lower risk but documented)
• (very low risk, mostly in the Heredia and Limón provinces near Nicaragua)
For most tourists visiting San José, La Fortuna (Arenal), Manuel Antonio, or the Guanacaste beach areas, the practical advice is the same: protect yourself from daytime mosquito bites because Aedes aegypti is a daytime biter, not the dawn/dusk pattern people associate with mosquitoes.
For up-to-date CDC travel advice for Costa Rica, visit wwwnc.cdc.gov/travel.
The CDC recommends four active ingredients for tropical travel:
• (longest field track record)
• (matches DEET in efficacy with better skin feel)
• (the only plant-based CDC-recognized active)
• (less common in US retail; widely used in Europe)
For most family trips to Costa Rica:
20 percent picaridin (Sawyer, Natrapel)
The default recommendation for adult travelers. 8-12 hours of protection. No fabric or plastic damage. No medicinal odor. Sawyer Picaridin Lotion is REI's most-recommended option for tropical travel.
8 percent PMD (Superbloc)
For families with kids 6 months and older. Plant-based. Alcohol-free water-based formulation. 4-6 hours of protection so plan to reapply at lunch and again at dinner. Labeled safe from 6 months which most PMD products are not.
For families with kids 6 months and older. Plant-based. Alcohol-free water-based formulation. 4-6 hours of protection so plan to reapply at lunch and again at dinner. Labeled safe from 6 months which most PMD products are not.
25 percent DEET (Off! Deep Woods, Cutter)
Strong protection. Use if you are doing deep jungle excursions, river trips, or if mosquitoes are particularly heavy at your specific location. Damages camera bodies, sunglasses, watches, so apply carefully.
For a typical family beach-and-jungle trip, a combination of 20 percent picaridin for the adults and 8 percent PMD for the kids is the most practical approach.
Mosquito repellent for kids in Costa Rica
The American Academy of Pediatrics recommends:
• no topical repellent. Use mosquito netting on the stroller and tight-weave clothing.
• picaridin 20 percent or DEET up to 30 percent allowed; apply to clothing not face.
• PMD 8 percent (Superbloc) is also allowed.
• all of the above, with adult-strength PMD also acceptable.
Practical kit for a family with a 6-month-old and a 3-year-old:
• 20 percent picaridin for parents
• 8 percent PMD spray (Superbloc) for both kids and a backup for the parents
• PMD wipes for face and neck reapplication (avoid spraying near kids' faces)
• Mosquito netting for the stroller
• Light long sleeves and long pants for dawn, dusk, and jungle hikes
What to pack vs what to buy locally
Local availability of mosquito repellent in Costa Rica is decent in San José and resort areas, limited in remote areas. Brands you may find:
• OFF! (with DEET concentrations marked in Spanish)
• Repel
• Local brands using citronella (NOT CDC-recognized, mostly decorative)
For reliable supply and to make sure you have a CDC-recognized active, bring what you need from home. The cost of 4 oz of Sawyer Picaridin or Superbloc PMD in the US is similar or cheaper than Costa Rican pharmacy pricing for imported brands.
What to pack in checked bag
• 2 to 4 oz pump-spray PMD or picaridin per traveler for the trip duration
• Backup family-pack of sprays for trips longer than 5 days
• Permethrin spray if you plan to treat clothing for jungle hikes (treat 2 days before departure)
What to pack in carry-on
• 3 to 4 packets of repellent wipes per traveler (no liquid limit on wipes)
• Travel-size 3.4 oz repellent for arrival-day use before checked bags are unloaded
• Hand sanitizer (separate item under the 3.4 oz limit)
Practical bite prevention beyond the spray
Repellent is one layer. Reduce bites further with:
Tight-weave clothing
Especially for the lowland Caribbean coast in the rainy season. Long sleeves and long pants in light colors. Mosquito-treated clothing (permethrin-treated) is excellent for jungle hikes.
Mosquito nets in rural lodging
Most resorts in tourist areas have screens. Eco-lodges and rural cabins often do not. Bring a portable mosquito net for the bed if you are staying in non-screened lodging.
Dawn and dusk caution
Aedes aegypti is a daytime biter, but other Costa Rica mosquito species are most active at dawn and dusk. Stay indoors or cover up during these hours when possible.
Avoid standing water near your lodging
Empty plant saucers, pet water bowls, kiddie pools. Any pool of water more than 5 days old can produce mosquitoes.
Window screens
Check your room's window screens for tears on arrival. If you find a gap, ask the front desk for a different room or for a portable mosquito net.
| Region | Mosquito pressure | Notes |
|---|---|---|
| San José (capital) | Low to moderate | Higher elevation reduces mosquito activity |
| Manuel Antonio (Pacific coast) | Moderate | Beach and jungle combination, standard repellent kit |
| Arenal / La Fortuna | Moderate to high | Lowland tropical, rain forest, daytime mosquitoes year-round |
| Guanacaste beach areas | Moderate | Dry season has fewer mosquitoes, wet season more |
| Tortuguero (Caribbean coast) | Very high | Limited road access, high mosquito density, mandatory netting and repellent |
| Cloud forest (Monteverde) | Low | Higher elevation, cool temperatures, fewer mosquitoes |
If you are planning Tortuguero or any Caribbean lowland: bring permethrin-treated clothing in addition to topical repellent. Mosquito density is on a different scale than Pacific coast resort areas.
After-bite care for tropical travel
If you get bitten despite repellent, standard bite relief applies (see Superbloc's for details):
• Cold compress
• 1 percent hydrocortisone cream
• Calamine lotion or aloe gel
Watch for signs of dengue if you develop symptoms within 2 weeks of return:
• Fever above 38°C (100.4°F)
• Severe headache
• Joint and muscle pain
• Nausea
• Rash
Dengue symptoms typically appear 4 to 10 days after infection. If you develop these symptoms, see a doctor and mention your Costa Rica travel.
Common questions about bug spray for Costa Rica
Do I need malaria pills for Costa Rica?
The CDC does not recommend malaria prophylaxis for most Costa Rica tourist destinations. Check the current CDC Costa Rica travel page for your specific itinerary, especially if you are visiting border areas with Nicaragua or Panama.
Is dengue serious?
Most dengue cases resolve on their own in 1 to 2 weeks. A small percentage develop severe dengue with internal bleeding, which requires hospital care. The risk is higher with second dengue infections, so people who have had dengue before should take extra repellent precautions on return trips.
What if I forget to pack repellent?
You can buy repellent at supermarkets in San José and most tourist towns. Brands to look for: OFF!, Repel, or any product listing "DEET," "picaridin," or "icaridin" on the active ingredient label. Avoid citronella-only products.
Should kids wear DEET in Costa Rica?
The AAP allows DEET up to 30 percent on children from 2 months. For most family trips, 8 percent PMD (Superbloc) or 20 percent picaridin is sufficient and gentler on skin. Save higher-concentration DEET for jungle excursions or known heavy-mosquito areas.
Are mosquito wristbands effective?
No. Mosquito wristbands provide a repellent zone of only a few inches and do not protect the rest of your body. Use topical repellent instead.
What about pregnant travelers?
The CDC recommends pregnant women defer travel to areas with active Zika transmission. Costa Rica has had Zika cases historically. Check the current CDC Costa Rica travel page before booking if pregnant. ACOG considers DEET, picaridin, and PMD safe during pregnancy at recommended concentrations.
How much repellent should I pack for a 7-day trip?
A 4 oz pump-spray bottle covers a family of 4 for about 5 to 7 days of consistent twice-daily use. For a 7-day trip, bring 2 bottles (one in checked, one as backup) plus 4 to 6 packets of wipes.
Superbloc travel kit for Costa Rica
• . 2 sprays plus 2 wipes packs covers a family of 4 for 7-plus days.
• . TSA-friendly for the flight, easy for kid face application, no liquid restriction at security.
• . Cooling formulation for hot humid days at the beach or in the rain forest.
• . The 8 percent PMD everyday spray, alcohol-free, safe from 6 months.
Featured in goop and Harper's Bazaar.
Written by Tanya Lee, Founder, Superbloc. Always check current CDC travel advice for Costa Rica before your trip.
