A technician checking a building perimeter and setting a monitoring point at the wall base

Preventive treatment in Al Nazlah Al Yamaniyah Jeddah

Al Nazlah Al Yamaniyah is a crowded old popular quarter in south eastern Jeddah centred on Khuzam Palace, home of the Jeddah Regional Museum. Traditional Hijazi houses survive beside newer apartment blocks, the population is dense, and shopping centres, schools, restaurants and cafes line King Khalid Street. The mixed old and new construction, tight lanes, dense restaurants and maritime humidity from the port create a complex environment that does not respond to single spot treatments but demands continuous monitoring and assessment at every visit.

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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 Al Nazlah Al Yamaniyah

Traditional Hijazi houses with their numerous gaps and stone foundations provide deep shelters for insects and rodents; infestations are not visible from street level but colonies are established deep within stone bases. The method is set out in full on how we approach Preventive treatment.

The first reason

Old Hijazi houses have deep foundations and numerous gaps

Traditional Hijazi houses built centuries ago rest on deep unplanned stone foundations where gaps between stones and poor drainage provide deep refuges for insects and rodents. Sealing these gaps requires major structural repairs that are often impractical or economically unfeasible for residents.

The second reason

Tight lanes and dark passages are shared insect highways

Narrow passageways and dark passages under Hijazi buildings provide safe routes for insects and rodents from one house to the next. Insects move nightly through these passages and enter gaps in the foundations, creating interconnected infestations across entire blocks.

The third reason

High population density and restaurants attract insects constantly

King Khalid Street bustles with restaurants, cafes and shops that generate food waste and debris continuously. Pressure on old houses from the street is unrelenting and insects find food easily, sustaining large populations.

Landmarks of Al Nazlah Al Yamaniyah

Work in Al Nazlah Al Yamaniyah is organised by its historic character around Khuzam Palace and on King Khalid Street framed by Al Shams Al Mushriqa Street. Visits prioritise the old Hijazi houses first where deep insect refuges exist, then progress to neighbouring modern apartment blocks that receive pressure from the old houses.

Khuzam Palace (Jeddah Regional Museum)
King Khalid Street
King Saud Mosque near Khuzam
Al Shams Al Mushriqa Street

Before treatment

What a preventive visit reads

A densely packed old quarter in south eastern Jeddah with traditional Hijazi houses alongside modern apartment blocks, narrow winding streets, very high population density and maritime humidity from nearby port and refinery.

The base of an exterior wall where the building meets the ground

The base of the outside wall

The base of old Hijazi house walls is deeply fissured; the external band addresses the visible stone surface but may not reach the narrow internal gaps where insects hide.

An exterior door threshold and the gap beneath it

Gaps and openings

Gaps between old and new construction are very large and deep, and complete sealing may require full building renovation rather than just preventive treatment.

An outdoor air conditioning unit with a condensate pipe on the wall

Air conditioning condensate

Air conditioning drains and water lines from Hijazi houses are old and may be exposed or drain into undefined locations, creating localised dampness around foundations.

Floor drains

Floor drains may be absent or unmapped in old Hijazi houses, and water accumulates directly at the base creating permanent insect breeding sites.

A drip irrigation line in damp soil beside planting

Irrigation against the wall

Irrigation directly against walls is common around Hijazi houses for landscaping and plants; water stands and attracts insects continuously.

A closed monitoring station at the foot of a wall

The monitoring points

Monitoring points in Al Nazlah Al Yamaniyah are positioned in tight gaps, corners and foundations and may need frequent replacement due to moisture and depth.

How we work

1
The baseline survey

We walk the outside boundary and then the inside: gaps under doors, pipe runs, vents, condensate lines, drains, the bin area and the store, and we fix the monitoring points before anything is applied.
2
Close the routes

Mesh on the vents, the gap under the door dealt with, the sleeve around a pipe run closed, and water put back into the drain nobody uses. Exclusion saves a spray that would otherwise repeat forever.
3
The band and the placed product

A residual band at the base of the wall outside and around door and window openings, with placed product inside joints and closed voids where it is warranted, and no open spray across living surfaces.
4
The scheduled visit: read, renew, record

We read the points to see which side is under pressure, renew the band where sun or irrigation has taken it, aim the visit at what the coming season opens up, and write down what was found and what was used.

What the preventive programme includes

A survey, then a check every visit

Entry points, moisture sources and storage, recorded before anything is applied and revisited each time.
Monitoring points that get read

At the wall and floor junction, under sinks and in the store, checked on every visit rather than only the last one.
A renewed exterior band

At the wall base and around the openings, put back wherever sun or irrigation took it between visits.
Drains, water lines and waste

The water seal in the drains, the condensate line and the ground around the bins, which are the standing water and food sources.
Between the visits

What to keep dry, what to keep closed, and what is worth a call before the next date. Ventilation we tell you before the visit.
A scheduled visit and a record of each

An agreed date, what the points held, what was treated, and what changed since last time.

What is different about Al Jamiah Sub-Municipality

Al Jamiah sub municipality spans the older south of Jeddah. Planned districts such as Al Fayha, Al Thaghr and Madain Al Fahd sit beside crowded popular quarters like the Nazlahs and Al Quraiyat, and beside cleared or clearing land in Ghulail, Petromin and Al Thaalibah awaiting redevelopment. Apartment buildings stand close together above dense runs of shops and restaurants along Old Makkah Road and Prince Majid Road. Drainage in the popular quarters is ageing, humid air drifts in from the port and refinery side to the west, and the flat low lying ground holds rainwater in narrow streets.

Questions about this district

Can an old Hijazi house be protected by regular preventive treatment?

Only partially. Gaps in the stone foundations are very deep; surface spraying cannot reach them completely. The programme focuses on blocking external entry points and visible passages, but insects in the foundations may remain beyond reach.

How often does preventive treatment visit a quarter with this density and age?

Every two to three weeks, and severe pressure may demand weekly visits. Monitoring points are read at each visit to determine the interval for the next one.

Do tight corners and narrow gaps between old stone require specialist treatment?

Yes, extensively. These gaps provide deep shelter and strong targeted spray may penetrate them but with difficulty. Extra monitoring points are positioned in these spaces.

Do irrigation or standing water around Hijazi houses increase insects?

Greatly. Low lying ground around old houses collects rainwater and wet foundations attract insects and rodents heavily.

Is a modern apartment building beside an old house more easily protected?

Somewhat, but direct contact with the old house may open pathways for insects. A new apartment beside an old house receives insect pressure from the old structure.

Does maritime humidity from the port and refinery increase pressure in Al Nazlah Al Yamaniyah?

Yes. Humidity and salt air from the port and refinery to the west keep insects active longer and provide ideal moisture for breeding.

How much does preventive treatment in Al Nazlah Al Yamaniyah 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 Al Nazlah Al Yamaniyah.