House flies can be increasingly difficult to get rid of as their populations increase, so it is best to treat promptly once an infestation is discovered. House flies are grey to black and about a fourth of an inch large. They have 2 sets of wings and course hair all over their bodies. In colder temperatures they rely on humans to survive. They are only active during the day, but because they are always eating, they are constantly leaving feces behind which can prove to not only be unsanitary but dangerous as well. Flies are carriers of over 100 pathogens including Typhoid, Salmonellosis, Tuberculosis and several other serious infectious agents.
Just like the name suggest, fruit flies are attracted to fruit as well as other produce and just about any other type of food. They are small annoying flies, about the size of half a pea, and lightly colored. A small infestation is easy to manage but if left alone, populations will grow quickly and be increasingly difficult to eliminate.
Drain flies are small and fuzzy, grey or tan flies found in damp and humid areas. They do not bite, and pose no other threats to humans other than being a nuisance. Their breeding is done in sinks and drains or anywhere there is standing water.
Gnats are small black flies with long legs. They are frequently found in moisture rich areas such as kitchens, bathrooms, and basements as well as in gardens or other watered areas. Most gnats do not bite and are not harmful to humans. As with other flies, if factors are right, their populations could climb and become difficult to eradicate.