The fly is in the insect order Diptera, including the house fly, fruit fly, drain and phorid flies, bottle flies, cluster flies, midges, fungus gnats and their control.The reason I included fruit flies, fungus gnats, drain flies, and phorid flies under the same heading is that they are frequently confused. Learn more about the fruit fly on a separate page.

Fungus Gnats, Drain Flies, Phorid Flies

Without a microscope it is hard to tell the difference between all these flies, but their breeding habits will give you a clue.  Unfortunately, in businesses there are frequently a combination of the flies, and as control methods are different you will need to know which pest or pests you have in order to control them effectively.

DRAIN FLIES are also tiny flies that breed in standing water, usually clogged or slow drains or infrequently used drains.  They are frequently a problem in bars where spilled beer is slow to drain in a floor drain. 

Control can be achieved by either cleaning the drains frequently, or by using a product called DF 5000 or a similar product.  You pour this down the drain and it eats away the bacteria and other crud the flies are breeding in and feeding on.  The adults can also be killed with a pyrethrum aerosol, but if you do not cure the problem you'll be spraying indefinitely.

House Flies (Musca Domestica)

House flies are one of the most common insects that plague man. They are often a nuisance in residential  homes as well as commercial areas. They are the biggest problem in restaurants and commercial kitchens.

Aside from their nuisance factor, house flies carry numerous diseases and germs. They contaminate food by landing on it. They are known to be carriers of typhoid fever, cholera,, diarrhea, dysentery, tuberculosis, anthrax, and parasitic worms.

House flies breed in fresh horse manure, garbage, human excretion, cow manure, and rotting vegetable matter. Their larvae are small white maggots which pupate and emerge into flies. Their life cycle under the right conditions is complete in six days with 10-12 generations per summer. To give an idea as to how rapidly flies can propagate, according to  entomologist Hodges, "A pair of flies beginning operations in April may be progenitors, if all were to live, of 191,010,000,000,000,000,000, flies by August. Allowing 1/8 of a cubic inch to each fly, this number would cover the earth 47 foot deep."

House Fly Control

Sanitation is, as with many insects, an important part of control. There is not an over abundance of horse manure in our metropolitan city, since the advent of the automobile. There is however tons of garbage.  Every restaurant has a dumpster behind the kitchen breeding flies. Every homeowner has an excess of garbage prior to pickup. All are prime breeding sites. For Fly Control products.


FUNGUS GNATS are usually found in damp soils.  They breed in potted plants in residential and commercial areas where plants are numerous.  We frequently have problems with them in office areas where the plants are over watered by overzealous secretaries as well as the janitorial staff.  Control can be achieved by drying out the soil or treating the soil with a granular insecticide labeled for indoor plants. (We often use Di-syston to treat the soil.  It is a systemic insecticide and will also control plant attacking insects such as whitefly and mealy bugs.)  For the adults any aerosol containing pyrethrum will kill them.
PHORID FLIES are usually a problem in mausoleums but they will breed in any decaying organic  matter of either plant or animal origin.  Thus we have found them in restaurants and bars.  Removal of the breeding site, proper sanitation, combined with aerosol or fogging pyrethrums will control the problem. Proper identification should be done by a professional, but if your sure by breeding sites or process of elimination which fly you are dealing with, control can be done on your own,  For products available see our fly product page.

MIDGES These small flies are often mistaken for mosquitoes, however they do not bite nor do they have long proboscis like the mosquito. The larvae like the mosquito are aquatic.  When emergence occurs thousands of adults move to residential or commercial areas covering houses, screen windows, causing damage to commercial sites by contamination of products.

Often, if you are near a sewage system or stagnant water body you will be infested with these insects.  The males swarm at dusk creating a cloud of males waiting for a female.

Control is difficult and requires equipment not usually available to non professionals.  For more information, contact us at info@scapest.com or call 1-800-775-bugs.