Q.Why do you call cockroach a pest?

Step 1. Cockroaches habitually move between unsanitary places (drains, sewage, garbage) and places where humans store or prepare food (kitchens, hotels, bakeries, warehouses), picking up and transporting harmful microorganisms as they go.

Step 2. They are known to carry the bacteria responsible for diseases such as cholera, diarrhoea, tuberculosis and typhoid, which is why they are classified as vectors - organisms that spread disease-causing pathogens without necessarily being harmed by them.

Step 3. Beyond spreading disease, cockroaches destroy stored food and contaminate it with their offensive odour and droppings, and their presence is itself considered a sign of unhygienic conditions. …

List the specific reasons cockroaches are harmful: disease vector status, food contami …

• Describing cockroaches as pests only because they are 'dirty' or unpleasant, without naming the specific diseases and allergic effects. …