Cockroach Control

Over 3,000 cockroach species exist worldwide, but only a handful are common pests in the UK. Accurate species identification is essential because each species has different habitat preferences and responds to different treatment approaches.

German Cockroach (Blatella germanica)

• Adult: 12 to 15 mm long, identifiable by 2 dark stripes across the thorax
• Needs warmth and humidity to survive. Most commonly found indoors in kitchens, bathrooms, and laundry rooms
• Good climbers. Can scale smooth surfaces like glass and polished metal due to sticky pads on their feet
• Cannot fly

Oriental Cockroach (Blatta orientalis)

• Adult: 20 to 30 mm long. Uniform dark brown or black
• Thrives in cool, damp areas such as basements, drains, and openings beneath porches
• Can survive outdoors in areas such as rubbish tips and leaf litter
• Known for feeding on garbage and decaying matter. A significant health concern

American Cockroach (Periplaneta americana)

• Adult: 20 to 30 mm long. Reddish brown. One of the largest pest cockroaches
• Prefers dark, humid, undisturbed areas. Found in basements, kitchens, and bathrooms

Brown Banded Cockroach (Supella longipalpa)

• Adult: 10 to 15 mm long. One of the smallest pest cockroaches. Yellow-brown stripes across the abdomen
• Prefers heated buildings, ceilings, attics, and areas inside and around appliance motors
• Primarily active at night. Particularly enjoys materials with high starch content

• Unusual smell from an established infestation. Musty, sweet, sometimes almond-like. Taints food and surfaces on contact.
• Droppings that are brown or black cylindrical, approximately 2 mm long (when little water is available)
• Smear marks that are brown and irregular shaped (when water is abundant). Found on horizontal surfaces and at wall-floor junctions.
• Shed skins (cast nymphal skins). Cockroaches shed 5 to 8 times as they mature. Found close to sheltering areas.
• Egg cases (oothecae). Dark brown, purse-shaped capsules approximately 6 to 12 mm long. Found in sheltered areas near food and water sources. Each case contains up to 40 eggs.
• Live or dead cockroaches or body parts, in kitchens, laundry rooms, drains, roof voids, and damp basements
• Damage to packaging, paper, plastics, and fabrics. Cockroaches gnaw on a wide range of materials, leaving irregular holes and chew marks.

Eliminate Food Sources

• Remove leftover food from tables, worktops, counters, and under appliances. Cockroaches need only a minimal amount of food for a meal.
• Use airtight containers for food storage. The smell of food is a key attractant.
• Rinse out bottles, cans, and plastics before recycling.
• Empty bins every day.
• Remove standing water from buckets, plant pots, pet bowls, and sinks. Cockroaches can survive up to 2 weeks without water if food moisture is high.
• Remove pet food, litter trays, and water bowls before nightfall.

Clean

• Keep kitchen, food handling, and storage areas clean and tidy.
• Clear food debris and spillages quickly.
• Vacuum regularly to remove debris from desks, furniture, and floors.

Declutter

• Remove newspapers, magazines, packaging, and cardboard. Cockroaches use pheromones in their droppings to signal safe nesting sites to others. Removing clutter reduces both hiding spots and pheromone buildup.

Building Maintenance

• Fill and seal cracks and holes in walls, around skirting boards, under sinks, around pipework, fitted cabinets, and behind electrical sockets. Use expanding foam where possible.
• Check and repair pipes regularly. Cockroaches thrive in damp areas near pipes and drains.
• Paint or varnish wooden shelves to seal cracks and reduce porous surfaces that absorb cockroach pheromones.

Autumn (September to November) - Harbourage seeking: As outdoor temperatures fall, Oriental cockroaches move deeper into buildings through drains, service ducts, and gaps around pipework. Restaurants, takeaways, and older residential blocks across Sunderland, Middlesbrough, and Hartlepool see a rise in sightings during this period. Watch for: live cockroaches appearing in kitchens and bathrooms at night, an oily or musty smell in cupboards under sinks, and dark smear marks along pipe runs and skirting boards.

Winter (December to February) - Established colonies in heated premises: Central heating creates ideal conditions for German cockroaches to breed rapidly indoors. Kitchens, boiler rooms, and laundry areas in commercial kitchens and multi-occupancy buildings are prime harbourage sites. Watch for: egg cases (oothecae) glued to the underside of drawers, behind fridge motors, and inside electrical fittings; increasing numbers of nymphs appearing during the day suggests a large established colony.

Spring (March to May) - Breeding acceleration: Longer days and rising ambient temperatures trigger faster breeding cycles. German cockroach populations can double in under a month in warm kitchens. This is the critical window for food businesses and hospitality premises to schedule inspections before summer trade peaks. Watch for: shed skins accumulating in harbourage areas, droppings resembling ground pepper along shelf edges, and increased daytime sightings indicating overcrowding.

Summer (June to August) - Peak activity: Both Oriental and German cockroach populations reach their highest numbers. Warmer drains and bin stores attract Oriental cockroaches to ground-floor and basement areas. Watch for: cockroaches appearing in unusual rooms as colonies expand beyond their original harbourage, increased activity around waste areas and grease traps, and complaints from neighbours or adjacent units in terraced properties across Stockton and Darlington.

Cockroaches can have a serious impact on business reputation and brand. Industries handling food and operating in regulated environments face the greatest risk. Cockroach problems negatively affect hygiene ratings for food businesses. Kitchen and dining areas face considerable food contamination risk.

Commercial services include no-obligation inspections, night-time inspections (cockroaches are nocturnal so nighttime reveals more), tailored treatment plans, chemical-free options for sensitive environments, and tailored insect proofing recommendations. Discreet service with minimum disruption to business operations.

Multi-unit coordination: For housing associations, hotel groups, and restaurant chains, simultaneous treatment across all affected units is critical. Treating a single unit in isolation leads to rapid reinfestation from adjacent properties.

Sectors most at risk include hospitality, healthcare, food businesses, education, and rental properties.

• Thoroughly clean all kitchen surfaces, removing grease, food residue, and food debris. Cockroaches are far less likely to take gel bait if abundant natural food is available.
• Empty and clean the inside of all kitchen cupboards, particularly under the sink, behind the cooker, and around the fridge.
• Pull out appliances (fridge, cooker, dishwasher, washing machine) from the wall to expose the backs and sides. These are primary harbourage areas.
• Remove all items from under sinks and from floor level in the kitchen.
• Do NOT use aerosol insecticide sprays in the days before treatment. These scatter the population deeper into wall voids and can repel cockroaches from gel bait placements, significantly reducing effectiveness.
• Dispose of any unsealed food items and transfer dry goods to airtight containers.
• For businesses: if possible, schedule the inspection for late evening or nighttime when cockroach activity is at its peak.

• Gel bait is applied in tiny, targeted amounts directly into cracks and crevices. It is not spread on open surfaces and presents very low risk to children and pets.
• All occupants including pets should vacate the property during treatment and for 2 to 4 hours afterwards, until all sprayed surfaces are fully dry.
• Fish tanks must be covered and air pumps turned off during any insecticide application. Even low concentrations can be harmful to aquatic life.
• Keep pet food bowls, water bowls, and litter trays away from treated areas until surfaces are confirmed dry.
• Once surfaces are dry, the property is safe for children and pets.