Fungus flies are a small fly which needs a lot of moisture to survive. Unlike other small flies which are able to live on most organic matter, fungus flies live on the fungus which is growing in moist and fertile soil. These flies are about 1/16″ long and usually black in color.

FUNGUS FLY BIOLOGY

There is not much data available about their life cycle, but it is known that they become adults in less than two weeks. It is also known that they need moist soil to live and that household plants seem to be able to provide this environment quite well. Homeowners have a tendency to over water or let water accumulate in the catch trays of plant pots. This water supply allows fungus to grow in the soil on which these flies thrive. In extreme cases, the leak from a water line or roof has lead to infestations. These flies live outside and are attracted to light. Deck and patio lights will attract them to your home and once inside, they will nest where moisture and fungus is able to accumulate. Fungus flies are easy to control. There are many products which can be used and they work in many environments.

FUNGUS FLY PROBLEMS

Fungus flies commonly infest anything moist and full of organic matter. Such areas include sink drains, garbage disposals, recycling bins, house plants, water trays under freezers or refrigerators, litter boxes, pantries where vegetables or fruit is being stored, mud rooms which stay moist, damp crawl spaces and basements.

FUNGUS FLY CONTROL

Fungus flies are easy to control. The use of PT-565 as a space spray will take care of any adults flying around the room you treat. However, this will require regular treatments but it can be used as frequently as is needed since it’s safe for all areas of the home.

FUNGUS FLY CONTROL STICKY TRAPS

To help control the problem, set out some FUNGUS FLY TRAPS in plant pots and around other areas where you have seen activity.

FUNGUS FLY CONTROL ELECTRIC TRAP

Another trap which works great for them is the FLY WEB ELECTRIC TRAP. Install one in any room which has a problem and it will quickly start catching flying adults.

FUNGUS FLY CONTROL LIQUID

Lastly, potted plants should be treated by watering them with an adulticide. For the plant soil, treat with the organic MULTIPURPOSE INSECT KILLER.  It works great on fungus flies and is approved for organic gardeners. If you find the flies accumulating on the plant, go with the organic HOUSE PLANT AEROSOL.

For potted plant soil treatments, just mix some up Multipurpose Killer in a watering can and water using the normal amount you would apply to the plant. By soaking the soil you’ll remove this location as a fungus fly nest site. This treatment will control the larvae and adults.

For the plant, spray the House Plant Aerosol when you see activity. This can be done throughout the day if needed but in most cases if you treat the soil, you’ll remove the source of the problem and regular treatments to the plant itself won’t be required.