How to Prevent Cockroach Infestations in Your Home or Restaurant
Cockroaches are one of the world's most resilient creatures. They can survive without food for a month, hold their breath for 40 minutes, and develop resistance to common pesticides. In South Africa, the German cockroach and American cockroach are the two species most commonly encountered in homes, restaurants, and commercial kitchens.
While a professional treatment is the most reliable solution for an existing infestation, prevention is always better — and cheaper — than cure.
Keep Food Sealed and Surfaces Clean
Cockroaches are primarily driven by the search for food and water. Store all food — including pet food — in airtight containers. Clean up crumbs and spills immediately, and never leave dirty dishes in the sink overnight. Wipe down countertops, stovetops, and the areas behind appliances regularly, as grease build-up is particularly attractive to cockroaches.
Fix Leaks and Reduce Moisture
Cockroaches need water to survive and are drawn to damp environments. Fix leaking taps, pipes, and any areas of water pooling under sinks. Ensure bathrooms are well-ventilated, and use a dehumidifier in persistently damp areas. Even small moisture sources — like condensation under the fridge — can attract cockroaches.
Seal Entry Points
Cockroaches can squeeze through gaps as thin as 3mm. Inspect your property for cracks in walls, gaps around pipes and electrical conduits, and poorly fitted door seals. Seal these entry points with silicone or caulk. Pay special attention to the kitchen, where gaps around plumbing under the sink are common entry routes.
Declutter Regularly
Cockroaches thrive in clutter, which provides them with dark, undisturbed harbouring spots. Regularly declutter storage areas, remove old cardboard boxes, and organise pantries and cupboards. In commercial kitchens, ensure that equipment is not stored directly against walls.
Dispose of Waste Properly
Keep dustbins clean and tightly lidded. Empty indoor bins daily, and ensure outdoor bins are kept away from the building entrance. Clean bins regularly with a disinfectant to remove food residue and odours that attract cockroaches.
For Restaurants and Food Businesses
Commercial food environments have specific obligations under South African food safety law. A routine pest control programme is not just good practice — it's often a legal requirement. Regular professional treatments, staff hygiene training, and documented pest control records are essential for compliance and food safety.
When to Call a Professional
If you're seeing cockroaches during the day, finding egg cases, or noticing a musty odour, you likely already have an infestation. Over-the-counter sprays can provide temporary relief but rarely eliminate the colony. A professional treatment using gel bait, residual sprays, and targeted crack-and-crevice applications will eradicate the problem at the source.
Trusted Pest Control provides effective cockroach extermination services for both residential and commercial properties across Gauteng. Get in touch for a free assessment.
