Sneaky Ways Mozzies Get Into Your House

Written By Phuong Tran

We all know mosquitoes love summer — warm evenings, humid air and plenty of places to breed. But while most of us assume mozzies only get inside when doors or windows are left open, the truth is they’re far sneakier than that.

Let’s look at some less obvious ways mosquitoes get into your home, and what you can do to stop them.

🦟 1. Through Tiny Gaps Around Screens and Doors

Even if your home has flyscreens, mosquitoes can still slip through small gaps, stretched mesh or tiny tears. Sliding doors, ageing screens and poorly sealed frames are common trouble spots.

Mozzies don’t need much space — if there’s a gap, they’ll find it.

What helps:

  • Check screens regularly for tears or loose edges

  • Repair or replace damaged mesh

  • Add weather stripping around doors and windows

🪟 2. Via Air Vents, Exhaust Fans and Chimneys

Air vents, bathroom exhausts and chimneys often connect directly to the outside. If they’re not properly screened, they can act like an open invitation for mosquitoes.

These entry points are easy to miss because they’re out of sight — and often out of mind.

What helps:

  • Install fine mesh over vents and chimney openings

  • Check that existing vent covers are intact and secure

🔄 3. When You’re Quickly Popping In or Out

That quick dash to the bin or a short step outside at dusk can be all it takes. Mosquitoes are attracted to carbon dioxide, body heat and scent, and they’ll happily follow you straight inside.

This is especially common in the early evening when mozzies are most active.

What helps:

  • Use a secondary screen door if possible

  • Be extra mindful at dusk and dawn

🐶 4. Through Pet Doors and Gaps Under Doors

Pet doors are another easy access point. Light from inside the house can attract mosquitoes, and even small gaps under doors can be enough for them to squeeze through.

What helps:

  • Use magnetic or mesh covers over pet doors

  • Install draft stoppers or door seals

💧 5. From Nearby Water Sources You Didn’t Think About

Mosquitoes breed in water — and they don’t need much of it. If they’re breeding close to your home, they’re far more likely to find a way inside.

Common overlooked water sources include:

  • Blocked gutters

  • Rainwater tanks without proper screening

  • Plant saucers and pet bowls

  • Slow-draining outdoor drains

What helps:

  • Empty standing water weekly

  • Keep gutters clean and flowing

  • Ensure water tanks and downpipes are screened

🌿 6. Resting in Plants Near Doors and Windows

Mosquitoes often rest in shady, sheltered areas during the day — including plants near doors and windows. When lights come on at night, they’re perfectly placed to drift inside.

What helps:

  • Trim back plants close to entry points

  • Move potted plants away from doors and windows

🌅 7. Following You Inside at Dusk or Dawn

Mosquitoes are most active at dawn and dusk. Outdoor dinners, evening chats on the patio or going back and forth between inside and outside at these times make it easier for them to sneak in unnoticed.

What helps:

  • Use fans in outdoor or semi-outdoor areas

  • Reduce lighting near open doors in the evening

🛡️ Final Thought

Keeping mosquitoes out isn’t just about spraying repellent — it’s about blocking their entry points and reducing breeding areas nearby. A few small checks around your home can make a big difference to how many mozzies make it inside this summer.

📚 References

Phuong Tran
Next

Love is in the Air: How Mosquitoes Mate