You may wonder, “What do flies do when they land?” Flies will land on many different parts of your body, but they are usually attracted to areas where there are food sources or water. While they will not bite you, they will suck up your skin secretions. They are especially interested in dead skin, sweat, proteins, and salts. Although they will sometimes land on livestock, they generally prefer human skin. Their body temperature and carbon dioxide levels make them attracted to humans.
If flies land on your food, they will often lay eggs on the food. The eggs may not be visible, but they will hatch into maggots in a few days. Maggots are disgusting and can ruin your food. They can also contaminate your products, which could result in a health inspection or loss of customers.
Flies also spread germs. Flies can carry more than 100 different diseases. The bacteria and viruses they carry are spread by their spongy mouth parts. They also pick up pathogens from garbage, animal waste, and other surfaces. Flies also have no teeth, so they eat by spitting onto food. Their saliva contains enzymes that break down the food. Some of them regurgitate their food and spit it back up.
In addition to their role as pollinators, flies lay eggs. Houseflies lay up to 500 eggs in their lifetime. If you have a flies infestation, make sure you contact a pest control specialist immediately. They can also lay their eggs in dead animals and garbage.