Where do fruitflies come from?

jEct2

Golden Member
Mar 1, 2005
1,726
0
0
one day i on the computer and all of a sudden during the course of 5 hours, my entire house is FILLED with them and they came out of nowhere. Theres no open fruit in my house either....what else do they eat? and how can i get rid of them? because they're RELALY bugging me.....
 

Squisher

Lifer
Aug 17, 2000
21,204
66
91
Fill a wine glass with cider vinegar and add a drop or two of dish soap. Set it out for a couple of days.

Flies will be attracted to vinegar and will slide into liquid not expecting the meniscus to be so high because of the soap.
 

Mrvile

Lifer
Oct 16, 2004
14,066
1
0
Originally posted by: Squisher
Fill a wine glass with cider vinegar and add a drop or two of dish soap. Set it out for a couple of days.

Flies will be attracted to vinegar and will slide into liquid not expecting the meniscus to be so high because of the soap.

Wow this really works?
 

djheater

Lifer
Mar 19, 2001
14,637
2
0
they're more than likely not fruitflies. They're probably balck files that have come up your sewer.
 

TwinkleToes77

Diamond Member
Jul 13, 2002
5,086
1
0
I dont know if they are fruit flies.. but i woke up this morning with a swarm of flies in my kitchen and all around the outside of my house.. im guessing its swarm season for these insects.
 

mzkhadir

Diamond Member
Mar 6, 2003
9,509
1
76
some info :

FRUIT FLIES
By Mike Potter, Extension Entomologist
University of Kentucky College of Agriculture


--------------------------------------------------------------------------------


University of Kentucky Entomology If you have been seeing small flies or gnats in your kitchen, they're probably fruit flies. Fruit flies can be a problem year round, but are especially common during late summer/fall because they are attracted to ripened or fermenting fruits and vegetables.
Tomatoes, melons, squash, grapes and other perishable items brought in from the garden are often the cause of an infestation developing indoors. Fruit flies are also attracted to rotting bananas, potatoes, onions and other unrefrigerated produce purchased at the grocery store. This fact sheet will explain how infestations originate and how they can be prevented in your home or place of business.

Biology and Behavior
Fruit flies are common in homes, restaurants, supermarkets and wherever else food is allowed to rot and ferment. Adults are about 1/8 inch long and usually have red eyes. The front portion of the body is tan and the rear portion is black. Fruit flies lay their eggs near the surface of fermenting foods or other moist, organic materials. Upon emerging, the tiny larvae continue to feed near the surface of the fermenting mass. This surface-feeding characteristic of the larvae is significant in that damaged or over-ripened portions of fruits and vegetables can be cut away without having to discard the remainder for fear of retaining any developing larvae. The reproductive potential of fruit flies is enormous; given the opportunity, they will lay about 500 eggs. The entire lifecycle from egg to adult can be completed in about a week.

Fruit flies are especially attracted to ripened fruits and vegetables in the kitchen. But they also will breed in drains, garbage disposals, empty bottles and cans, trash containers, mops and cleaning rags. All that is needed for development is a moist film of fermenting material. Infestations can originate from over-ripened fruits or vegetables that were previously infested and brought into the home. The adults can also fly in from outside through inadequately screened windows and doors.

Fruit flies are primarily nuisance pests. However, they also have the potential to contaminate food with bacteria and other disease-producing organisms.

Prevention
The best way to avoid problems with fruit flies is to eliminate sources of attraction. Produce which has ripened should be eaten, discarded or refrigerated. Cracked or damaged portions of fruits and vegetables should be cut away and discarded in the event that eggs or larvae are present in the wounded area. A single rotting potato or onion forgotten at the back of a closet, or fruit juice spillage under a refrigerator can breed thousands of fruit flies. So can a recycling bin stored in the basement which is never emptied or cleaned.

People who can their own fruits and vegetables, or make wine, cider or beer should ensure that the containers are well sealed; otherwise, fruit flies will lay their eggs under the lid and the tiny larvae will enter the container upon hatching. Windows and doors should be equipped with tight-fitting (16 mesh) screens to help prevent adult fruit flies from entering from outdoors.

Eradication
Once a structure is infested with fruit flies, all potential breeding areas must be located and eliminated. Unless the breeding sites are removed or cleaned, the problem will continue no matter how often insecticides are applied to control the adults. Finding the source(s) of attraction and breeding can be very challenging and often will require much thought and persistence. Potential breeding sites which are inaccessible (e.g., garbage disposals and drains) can be inspected by taping a clear plastic food storage bag over the opening overnight. If flies are breeding in these areas, the adults will emerge and be caught in the bag.

After the source of attraction and breeding is eliminated, a pyrethrum-based, aerosol insecticide may be used to kill any remaining adult flies in the area.

A better approach, however, is to construct a trap by placing a paper funnel (rolled from a sheet of notebook paper) into a jar which is then baited with a few ounces of cider vinegar. Place the jar trap(s) wherever fruit flies are seen. This simple but effective trap will soon catch any remaining adult flies which can then be killed or released outdoors.

 

Mrvile

Lifer
Oct 16, 2004
14,066
1
0
Originally posted by: TwinkleToes77
I dont know if they are fruit flies.. but i woke up this morning with a swarm of flies in my kitchen and all around the outside of my house.. im guessing its swarm season for these insects.

How big are they? Fruit flies are very small...
 

Squisher

Lifer
Aug 17, 2000
21,204
66
91
Originally posted by: Mrvile
Originally posted by: Squisher
Fill a wine glass with cider vinegar and add a drop or two of dish soap. Set it out for a couple of days.

Flies will be attracted to vinegar and will slide into liquid not expecting the meniscus to be so high because of the soap.

Wow this really works?

I've been doing it for years.
 

TwinkleToes77

Diamond Member
Jul 13, 2002
5,086
1
0
Originally posted by: Mrvile
Originally posted by: TwinkleToes77
I dont know if they are fruit flies.. but i woke up this morning with a swarm of flies in my kitchen and all around the outside of my house.. im guessing its swarm season for these insects.

How big are they? Fruit flies are very small...

These are really small too. but a bit bigger than fruit flies.. the ones that have invaded my house actually fit through the holes int he screen windows!
 

FoBoT

No Lifer
Apr 30, 2001
63,084
15
81
fobot.com
a mommy fruit fly and a daddy fruit fly spend a night together in their bedroom

the mommy fruit fly lays eggs

baby fruit flies hatch out of the eggs

this is "The Circle of Life"
 

alkemyst

No Lifer
Feb 13, 2001
83,769
19
81
Originally posted by: FoBoT
a mommy fruit fly and a daddy fruit fly spend a night together in their bedroom

the mommy fruit fly lays eggs

baby fruit flies hatch out of the eggs

this is "The Circle of Life"

I thought they came from fruitfly seeds.