Seems harmless, Flies are one of the most dangerous pests in your house. It lands on your unattended food, leaving it contaminated and inedible. Flies are known to land on rotten food, dead animals, trash and manure. From there they pick up deadly viruses, bacteria and germs which they transmit to your food causing harm to your health.
Hence, opt for professional fly control in Kolkata and rest of India to keep flies at bay.