Businesses dealing with food, such as restaurants or supermarkets are especially susceptible to flies, and flies can carry viruses and bacteria.
Flies are flying, fast insects that breed fast. Their larvae, also known as maggots, are particularly destructive to food items. Flies breed quickly, and their larvae hatch quickly and immediately start devouring any food items. Flies can also carry diseases, and nasty bacteria.
How to get rid of flies?
Most establishments keep flies at bay by getting rid of rotten food, or not leaving food out in the open. Many also install bug zappers to deal with the occasional fly. These methods work well, and usually do help curb fly infestations.
For large scale infestations, such measures might not be effective, and tougher measures might have to be taken. Professionals pest controllers are able to chemically sanitise and kill all bugs, getting rid of any large scaled infestations.