Cockroaches are one of the most common home pest. Three common cockroaches in Singapore are the German cockroach, Brown Banded cockroach and American cockroach. Cockroaches enter your premises in search of food, water and shelter. Once they have infested an area, they can multiply quickly, posing threat to your comfort and health. Cockroaches are known to carry bacteria that can result in food poisoning, diarrhoea, allergies and skin rashes. High infestation can also cause an odour smell. Making it very unpleasant.