The Problem with Mosquito Myths
Americans spend over $300 million annually on mosquito control products—and a shocking amount of that money goes to products that barely work. University research consistently shows that many popular "mosquito solutions" range from mildly helpful to completely useless.
Let's debunk 10 common myths, then talk about what actually works.
10 Mosquito Myths — Busted
Myth 1: Citronella Candles Keep Mosquitoes Away
Reality: Studies show citronella candles reduce mosquito landings by only about 42% compared to 23% for unscented candles. The small amount of citronella oil released is quickly diluted outdoors. You'd need one candle per person at arm's length to see any effect—and even then, mosquitoes will still bite.
Myth 2: Bug Zappers Eliminate Mosquitoes
Reality: A landmark University of Delaware study found that of 13,789 insects killed by bug zappers over a summer, only 31 (0.22%) were mosquitoes. Mosquitoes aren't attracted to UV light—they follow CO2 and body heat. Bug zappers may actually make things worse by killing mosquito predators like dragonflies and beetles.
Myth 3: Eating Garlic or Bananas Repels Mosquitoes
Reality: No food has been scientifically shown to repel mosquitoes. Your diet doesn't change your carbon dioxide output or body chemistry enough to matter. This myth likely persists because garlic contains allicin, which has insecticidal properties in concentrated form—not at the levels you'd get from eating it.
Myth 4: Blue Porch Lights Don't Attract Mosquitoes
Reality: No color of light attracts or repels mosquitoes. They navigate by CO2 and body heat, not light. Yellow "bug lights" attract fewer flying insects overall, but mosquitoes aren't among the insects attracted to standard lights in the first place.
Myth 5: Ultrasonic Devices Repel Mosquitoes
Reality: The FTC has warned multiple companies for false advertising on ultrasonic pest devices. Multiple peer-reviewed studies show zero effectiveness. Mosquitoes don't respond to ultrasonic frequencies. Don't waste your money.
Myth 6: Bats and Purple Martins Eliminate Mosquitoes
Reality: While both eat mosquitoes, stomach-content studies show mosquitoes make up less than 1% of their diet. Bats prefer moths and beetles; purple martins prefer dragonflies. They're great for your ecosystem—just don't rely on them for mosquito control.
Myth 7: Mosquitoes Only Bite at Night
Reality: Depends on the species. Asian tiger mosquitoes (extremely common in our region) are aggressive daytime biters. Yellow fever mosquitoes bite during the day too, often indoors. Culex (house) mosquitoes are the main nighttime biters. Read our species guide to know what's biting you.
Myth 8: Mosquitoes Die After They Bite You
Reality: Completely false. Unlike honeybees, mosquitoes bite multiple times. A single female bites every 3 days throughout her 6–8 week adult life. Killing the one that bit you doesn't stop the next 20 from trying.
Myth 9: DEET Is Dangerous to Use
Reality: DEET has been used safely for over 60 years and is approved by the EPA and CDC. At 20–30% concentration, it's the gold standard for mosquito repellent. Side effects are extremely rare when used as directed. The real danger is not using repellent in areas with mosquito-borne disease.
Myth 10: Dryer Sheets Repel Mosquitoes
Reality: A University of Kansas study found that while dryer sheets (specifically Bounce brand) showed mild repellent effects against fungus gnats, there is no evidence they repel mosquitoes at any meaningful level. Another folk remedy that sounds good but doesn't hold up to testing.
5 Things That Actually Work
- EPA-registered repellent (DEET, picaridin, or oil of lemon eucalyptus) — Proven to reduce bites by 90%+ when applied correctly
- Eliminating standing water — Removes 80% of breeding potential from your property. See our yard prevention checklist
- Fans — Mosquitoes can't fly in wind over 1 mph. A box fan or patio ceiling fan provides real protection
- Professional barrier spray — Residual treatment on vegetation and structures reduces yard populations 85–90%
- BTI larvicide dunks — Kills larvae in standing water you can't eliminate (ponds, ditches, rain barrels) without harming wildlife
For a complete protection plan, read our mosquito control guide.