Mosquito control in Harat Al Bahr, Jeddah

Targeted, not broadcast

Product goes into cracks and runways, never sprayed across open surfaces.
Told before we start

What we will use, where it goes, and what to cover or move before we arrive.
A follow-up visit

We return after the first treatment, because what survives it does not show on the day.
Homes and businesses

Apartments and villas, and kitchens and stores that need a record of each visit.

Why they keep coming back in Harat Al Bahr

The gaps between coral stone houses are extremely narrow and completely lightless; water never dries in them, and sea wind carries salt which increases humidity throughout the lanes. The method is set out in full on what Mosquito control involves.

The first reason

Coral stone houses and impossibly tight gaps

Old buildings are made of coral stone and press directly against each other. The gaps between them are so narrow that sunlight never reaches them. These spaces stay perpetually damp, water collects at the bottom, and they are the perfect mosquito breeding ground.

The second reason

Old drainage and stagnant water

Crumbling pipes leak water beneath the houses and old drain outlets do not seal tightly. Water flows very slowly through underground channels and remains pooled in pits and corners below the lanes where no one can see it.

The third reason

Sea humidity and salt air

Proximity to the harbour and sea means very high humidity and salt in the air. Coral stone walls hold moisture, ground level floors never dry out, and mosquitoes rest in this permanent dampness day after day.

The character of Harat Al Bahr

Historic district: close-set buildings, narrow lanes and ageing services

Old houses are pressed extremely close together, the gaps between them are narrow, black and permanently wet, old drains leak continuously, and sea humidity is very high. Mosquitoes find everything they need for unbroken breeding.

Before treatment

Standing water and shade decide the method

Low lying ground at the waterfront's edge, buildings pressed tightly together with almost no gaps, very old drainage systems and constant moisture from proximity to the harbour and sea.

The daytime biter

During the day mosquitoes hide in the impossibly tight gaps between houses and in dark corners under staircases, where they rest on damp stone.

A drainage grate over dark standing water

The one that comes out after sunset

After sunset they emerge from the gaps to search for food in the houses and narrow lanes, and the wet air makes their flight easy and their survival certain.

An outdoor air-conditioning unit fixed to a building wall

Air-conditioning condensate

Air conditioning drains from the few modern flats add to the old drainage system, and water pools in underground channels beneath the lanes that never fully dry.

The tank and its openings

Old water tanks sit on roofs or in half floors, their outlets are too wide and do not close properly, and seeping water runs directly into the gaps below.

Potted plants in a garden standing in saucers

Garden containers and irrigation

Few gardens exist here, but empty pots and rubbish collect standing water, and the rare potted plants add extra moisture to air that is already saturated.

The shade it rests in

The permanent shade from impossibly tight gaps and low ground level at the waterfront keeps moisture trapped, which is the core mosquito refuge throughout the day.

How we work

1
Inspect and map the water

We walk the perimeter, the roof, the garden, the meter chambers and the condensate runs, record everything that holds water, and read the species from the breeding site and the time of biting.
2
Remove the water that can go

Empty, invert, cover: saucers, containers, old tyres and roof gullies. Every point that disappears is a treatment that never needs repeating.
3
Larval treatment, then the resting surfaces

Water that cannot be drained is treated so the larva never completes, then a residual goes under planting, beneath outdoor furniture and along low shaded walls.
4
The follow-up visit

We come back once the generation that was in the water on the first visit has completed, review every point we recorded and re-treat where needed.

What mosquito control includes

A recorded water survey

Roof, perimeter, garden, meter chambers and condensate lines, written down before anything is applied.
Draining and covering the sources

Emptying what can be emptied, draining what can be drained, and covering what has to stay full.
Larval treatment for the water that stays

For ground tanks, inspection chambers, water features and any permanent water that has to remain.
A residual on the resting places

Under trees and shrubs, beneath outdoor furniture and on shaded walls, where the adult sits out the day.
Aftercare instructions

What stays inverted, what gets covered, which openings need mesh, and when watering goes back to normal.
A scheduled follow-up

A set date after the first treatment, with every recorded water point reviewed and re-treated if the water came back.

Landmarks of Harat Al Bahr

Treatment of Harat Al Bahr starts at Bab Al Bunt where the lanes open to the waterfront, then moves through the narrow gaps and old pipes between the coral stone houses, passing Dar Radwan and the commercial lanes of Qabil Street where the densest mosquito colonies gather.

Bab Al Bunt
Qabil Street
Dar Radwan
Akkash Mosque

Questions about this district

Does salt air and high humidity reduce treatment effectiveness here?

Salt may affect how some chemicals coat surfaces, but high humidity actually speeds the treatment's success. Higher humidity means faster breeding, so we need to return more frequently to stay ahead.

Are these impossibly tight gaps between old houses a perfect breeding environment?

Yes. The gaps are extremely narrow and completely black, water never dries in them. This is the quarter's largest mosquito stronghold, and each house connects to the next through these shared gaps.

If I treat my house alone, does it stop them or do they come from the shared gaps?

Mosquitoes move easily from the shared gaps. The gaps between houses are connected, and they move from one house to the next all night long. The whole quarter needs consistent treatment.

How often must I treat given this high humidity and the age of everything?

Harat Al Bahr needs treatment weekly or every ten days. Continuous moisture and stagnant water in old drains means breeding never stops. Monthly treatment will not work here.

Are the old drain outlets in these houses a major mosquito source?

Very much so. The outlets are ancient and do not seal properly. Water moves in and out very slowly, and mosquitoes breed inside them. Treating the openings inside and outside the house is essential.

Does salt water and wave spray from the sea bring extra mosquitoes?

The sea itself does not carry many mosquitoes, but the salt air and dampness make the ground and walls ideal for breeding. Wave spray increases overall humidity, which speeds breeding in the lanes.

How much does mosquito control in Harat Al Bahr cost?

It is set after the inspection, because the price follows the type of infestation, the size of the space, how far it has spread and the number of visits it needs. Send a photo and a description on WhatsApp and we will give you an estimate before we reach Harat Al Bahr.