Mosquitoes are endemic in Bangkok — carrying dengue, zika, and chikungunya. Effective control isn't just comfort, it's health.
The Bangkok mosquito calendar
- Dry season (Nov–Feb): lowest mosquito activity
- Cool transition (Mar–Apr): moderate, mostly dusk
- Rainy season (May–Oct): peak activity, dengue risk highest
- Spikes after rainstorms — breeding in standing water takes 5–7 days
The breeding-source approach (most effective)
Mosquitoes travel a maximum of 200 meters from their breeding site. If you can eliminate breeding within 200m of your home, you've solved 80% of the problem.
- Empty all standing water weekly: plant saucers, buckets, trays
- Check balcony drains (slow drains = breeding sites)
- Treat decorative water features with mosquito dunks (bacterial larvicide)
- Keep window screens intact (Bangkok window screens often have small holes)
- Petition your juristic office about common-area standing water
Indoor prevention
- Electric mosquito repellent plug-ins (safe, widely effective)
- Window screens on every window used for ventilation
- Mosquito bed net (if you sleep with windows open)
- Ceiling fans (mosquitoes can't fly well against steady wind)
- Avoid standing water in flower pots or pet bowls
Outdoor/patio prevention
- Citronella candles or diffusers (modestly effective)
- Thermacell devices (highly effective for patio dining)
- Long sleeves and repellent with DEET or picaridin at dusk
- Eucalyptus lemon oil (natural alternative, moderately effective)
When to escalate to professional treatment
- Family members with dengue or chikungunya history
- Persistent mosquito presence despite breeding-source elimination
- Infants or elderly with mosquito bite reactions
- Living near standing water (canal, pond) that can't be controlled
Frequently Asked Questions
What's the best mosquito repellent for Bangkok?
DEET 20–30% or picaridin 20% for skin. For indoor air, electric plug-ins with prallethrin. Avoid essential-oil-only products for high-risk zones.
CLEANROVA pest control offers mosquito fogging for outdoor areas and source-breeding elimination as a full service.
