Following recent reports of cockroach infestations in Wales, pest control experts are warning that the pests can rapidly multiply indoors, often remaining hidden behind appliances, under sinks and inside wall cavities until infestations become severe.
While often associated with warmer climates, cockroaches are becoming an increasing issue in UK properties including homes, restaurants, hospitals and commercial kitchens, where warmth and moisture create the perfect breeding conditions.
Experts warn that some cockroach species can squeeze through gaps as small as 3mm and are notoriously difficult to detect during the early stages of an infestation, spending most of their time hidden in dark spaces close to food and water sources.
German cockroaches (Blattella germanica), the species most commonly found in the UK, are known carriers of harmful bacteria including Salmonella and E. coli. Their droppings, shed skins and saliva have also been linked to allergic reactions and asthma symptoms.
Pelsis is urging homeowners and businesses to remain alert for warning signs, particularly in kitchens, utility spaces and around white goods. Warning signs include fast-moving brown insects, particularly at night, activity around sinks, drains and white goods, small dark droppings and musty odours in enclosed spaces.
Sophie Thorogood, technical training manager, at Pelsis said: “Cockroaches are highly resilient pests that can spread rapidly once established indoors. By the time people begin noticing them regularly, infestations are often already well developed behind walls, appliances or kitchen units.
“Because they can carry harmful bacteria and contaminate surfaces, early identification and professional treatment is extremely important. The longer infestations are left unmanaged, the more difficult they can become to control.”


