Pest control technician inspecting beneath a kitchen sink in a London home

Alesta · Cockroach control in London

Cockroach activity, treated at the source.

Discreet inspection and targeted control planned around the species, harbourages, food and water sources, adjoining areas and follow-up evidence.

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Confirm activity and harbourages

Effective control starts with how the insects are living.

Cockroaches favour warmth, water, food residue and narrow protected gaps. Sightings can centre around kitchens, boiler cupboards, bathrooms, appliances, service risers and waste areas. Species and life stage matter because behaviour, breeding rate and likely harbourages influence the treatment plan.

One visible insect does not reveal the full extent. We assess droppings, egg cases, cast skins, monitoring catches and activity patterns, while considering adjoining flats, pipe routes and shared service voids that may allow reinfestation.

Harbourage inspection

Warm appliances, pipe entries, cabinets, service gaps and moisture points checked for evidence.

Monitoring placement

Discreet traps help map activity and show whether treatment is reducing the population.

Targeted bait treatment

Suitable gel or other authorised products placed in protected locations according to the plan.

Follow-up assessment

Fresh evidence, bait uptake, hygiene factors and adjoining-source risks reviewed after treatment.

Pest control technician inspecting appliance gaps and monitoring traps with a homeowner

Common reasons customers call

Signs around warm, protected service areas.

Night-time kitchen sightings

Insects appear around sinks, cupboards, bins or appliances when the room becomes quiet.

Droppings or egg cases

Dark specks, shed skins or capsules are found inside cabinets and warm equipment gaps.

Activity returns after DIY spray

Visible insects reduce briefly but hidden harbourages, eggs or adjoining sources remain active.

Several flats share service routes

Pipe and riser voids may allow movement between units, requiring coordinated investigation.

Why Alesta for cockroach control

A discreet response shaped by harbourage evidence.

Species and evidence checked

The plan is based on signs, monitoring and likely harbourages rather than a sighting alone.

Baits placed discreetly

Targeted placements keep products in protected locations and reduce unnecessary surface treatment.

Contributing sources discussed

Food, moisture, waste, cracks and adjoining routes are addressed alongside product use.

Follow-up expectations clear

Monitoring results, re-treatment criteria and customer responsibilities are explained.

A considered treatment

How we carry out cockroach control.

Pest control technician applying targeted gel bait inside protected kitchen cabinet gaps

Every treatment begins with the sightings and the building. We ask when and where insects were seen, whether activity is mainly at night, which rooms share pipework, and what products have already been used. Photographs can help with initial identification, but monitoring and physical evidence are more reliable than description alone. Food should be sealed, loose waste removed and relevant cupboards made accessible before the visit, without spraying new DIY products that may scatter activity or contaminate bait locations.

The technician inspects warm, humid and protected areas: behind appliances, beneath sinks, around boiler cupboards, cabinet joints, service penetrations and waste storage. Droppings, egg cases, cast skins and monitoring catches help establish species, distribution and severity. Water leaks, food residue, clutter and gaps into adjoining areas are recorded because treatment cannot succeed through product use alone if the property continues to provide easy resources and routes.

Where suitable, small gel-bait placements are applied into protected cracks and harbourages rather than across open food-contact surfaces. Monitoring traps are positioned to map activity and show progress. Residual or dust formulations may be included only where authorised, appropriate and safe for the location. Product labels, occupancy, children, pets and re-entry guidance control the method. Bait must not be cleaned away or sprayed over, and food competing with it should remain securely stored.

Control is reviewed through fresh sightings, trap catches, bait uptake and evidence of younger stages. Cockroach populations may require repeat treatment because concealed egg cases and adjoining sources can sustain activity after the first visit. In multi-unit buildings, untreated neighbouring harbourages may cause reinfestation. At handover we explain cleaning restrictions, moisture and waste actions, proofing priorities and the review period. The aim is measured population reduction and source control, not an unrealistic promise based on one visible treatment.

Clear pricing

Cockroach control prices.

The final cost depends on property size, species, activity level, harbourages, adjoining risks and the number of treatment visits required.

Service scopePriceWhat affects the final price
Targeted residential treatmentFrom £120Rooms, species, evidence, access and agreed product method
Multi-room or heavier activityFrom £250Harbourage extent, monitoring, preparation and adjoining service routes
Follow-up or coordinated treatmentQuoted to scopeTrap results, repeat visits, multiple units and proofing requirements

Pricing context: Existing Alesta data lists cockroach treatment from £120 and broader scopes from around £250. Inspection details and the number of planned visits are confirmed before booking.

How the service works

From first sighting to monitored control.

01

Tell us where activity appears

Describe timing, rooms, evidence, adjoining units, leaks and any products already used.

02

Inspect, monitor and treat

The technician maps harbourages and applies the agreed targeted control method.

03

Review evidence and reduce sources

Follow-up uses sightings and trap results alongside hygiene, moisture and proofing actions.

Cockroach control FAQ

Before treatment begins.

Clear answers about identification, preparation, bait treatment, safety and follow-up.

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How can I tell whether the insect is a cockroach?

Photographs help, but species confirmation uses body shape, size, colour and evidence such as droppings, egg cases and monitoring catches. Keep a sample safely contained if possible.

How should I prepare for treatment?

Seal food, empty waste, clean accessible residue, fix known leaks where possible and open the cupboards or appliance gaps identified in your preparation instructions.

Why should I avoid DIY spray before the visit?

Repellent sprays can scatter insects into new gaps and contaminate gel bait. Tell the technician exactly what has been applied and where.

Are gel baits safe around children and pets?

Products are placed in protected inaccessible locations according to their label. Occupants and pets still need to follow the specific safety and access guidance given for the booking.

Is one visit always enough?

No. Egg cases, concealed harbourages and adjoining sources can require monitoring and repeat treatment. The planned review depends on the species and evidence found.

Can cockroaches move between flats?

Yes. Shared risers, pipe gaps and service voids can allow movement. Building management may need to coordinate inspection where activity crosses units.

What should I do after treatment?

Do not remove bait or traps early, keep food and waste controlled, address moisture and follow the agreed review period. Report fresh sightings with the location and time.

Worried about cockroach activity?

☎ Call 020 3608 3976