Mosquito Eggs: What They Look Like and Where They Are Laid

Mosquito eggs are tiny, and most people never see them. But knowing where and how different mosquitoes lay their eggs explains why they appear in unexpected places and why scrubbing containers matters as much as emptying them.

This guide explains what the eggs look like and where to find them.

The short answer

Mosquito eggs are very small, about a millimetre or less, and look like tiny black or dark specks, or small floating rafts, depending on the type. Aedes mosquitoes, which spread dengue and chikungunya, lay single eggs on the damp inner walls of containers just above the waterline, where they can survive drying for months and hatch when water returns. Culex mosquitoes lay boat-shaped rafts of eggs that float on the water surface. Anopheles lay single eggs that float on the surface. Because Aedes eggs stick to surfaces, scrubbing containers, not just emptying them, is essential.

Aedes eggs

• Laid singly, as tiny dark, rice-like specks on the inner walls of containers just above the waterline.
• Stick firmly and can survive dry conditions for months.
• Hatch when flooded, for example by rain or refilling.
• Found in small containers, tyres, flower pots, tanks, coolers and discarded items.

Culex eggs

• Laid in floating rafts, like tiny dark boats, containing many eggs stuck together.
• Found on the surface of stagnant, often polluted water such as drains, ditches and unused tanks.

Anopheles eggs

• Laid singly on the water surface, often with small floats on the sides, giving a boat-like shape under magnification.
• Found in cleaner, still or slow water such as ponds, puddles and wells.

How to find eggs

1. Look at the inner walls of empty containers for fine dark lines or specks at the old waterline.
2. Look at still water surfaces for small dark rafts or scattered specks.
3. A magnifying glass or phone camera zoom helps.

How to remove them

• Scrub containers: Use a brush and detergent on the sides and the waterline. Emptying alone will not remove stuck Aedes eggs.
• Dry thoroughly: Eggs may survive drying, so scrubbing matters. Store containers upside down.
• Remove unnecessary containers: Discarded items, tyres and coconut shells.
• Cover water: Prevent egg-laying with tight lids and mesh.
• Remove floating rafts: Scoop and dispose, and clean the container.

Why it matters

Eggs that survive on dry container walls can hatch with the next rain, so a container you emptied last week can become a breeding site again. Regular scrubbing breaks the cycle.

When to call a professional

For tanks, drains and large water bodies, a professional can treat or advise on proper cleaning and proofing.

Frequently asked questions

Can mosquito eggs survive drying?

Aedes eggs can, for months.

How long until eggs hatch?

Often within a couple of days once covered by water.

Can I see eggs with the naked eye?

Barely. They look like tiny specks.

Do bleach or vinegar kill eggs?

Scrubbing is more reliable than relying on chemicals.

This guide is part of IPest's complete resource on mosquito control. For identification help, prevention and treatment options, see our full mosquito control guide for Bangalore.