As autumn sets in, mosquitoes are making a comeback, much to many people’s surprise (and annoyance). Despite cooling temperatures, mosquitoes are buzzing around, with many sneaking into homes.
Why Are Mosquitoes Back?
Seoul City’s mosquito forecast for October 1–21 classified mosquito activity as “caution,” with outdoor larvae habitats still active. The milder fall temperatures allow mosquitoes to thrive, especially since the intense summer heat kept many in check. This year’s extended warm weather, with daytime temperatures hovering around 77°F (25°C) through mid-October, has made fall especially welcoming for mosquitoes.
Mosquitoes are ectothermic, meaning their activity is temperature-dependent. Dr. Lee Dong Kyu, an environmental science professor at Kosin University, explains, “The red house mosquito, which is common in cities, becomes inactive above 89.6°F (32°C) but thrives in temperatures around 77°F to 80.6°F (25°C to 27°C).” Mosquitoes slow down below 55.4°F (13°C), yet with warmer average temperatures, they’re active earlier in spring and may even linger into December.
How to Keep Mosquitoes Away
Scents are an effective mosquito repellent. Studies in International Biomedical Research highlight certain essential oils—like lemon, cinnamon, eucalyptus, and citronella—as natural deterrents. Spraying oils with these scents or growing plants that release them can keep mosquitoes at bay.
If you get bitten, avoid scratching, as it can worsen irritation. Instead, use anti-itch treatments containing ingredients like diphenhydramine (antihistamine), dibucaine (local anesthetic), or counterirritants to reduce pain and itching.
Tips for Young Children
It’s best to use child-specific treatments for infants and young children. Some ingredients in standard mosquito creams can cause adverse effects, so avoid applying them to newborns or toddlers under two. Instead, applying a mild ointment like Bepanthen and using a cold, damp cloth for infants over one year can help soothe bites safely.
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