Fly Treatment and Controlling Flies

Flies are a big problem in New Zealand. Some bite, others are scavengers, and many can transmit disease or cause allergic reactions.

Fly Identification

Get info on the type of flies you need to kill and control.

However, most flies are easily controlled. Only certain small flies breed indoors but many types of flies are attracted inside which are an annoyance, but more importantly, raises health concerns.  The main things that bring flies indoors are:

  • Ideal temperatures radiating from buildings
  • The search for food
  • Light sources

To combat fly problems, you must eliminate the source of the infestation as well as the adult flies.

  • Eliminate Fly Breeding Areas
  • Sanitation to reduce breeding grounds
  • Use of Fly Zappers, Fly Lights and Fly Treatment Sprays for adult flies

Fly Treatment Steps

Once you’ve found information on your fly, Pest Control Auckland outlines the steps needed on how to kill flies. For sensitive areas needing Fly Treatment (i.e. around food), that are unable to use traditional methods, you’re still in luck.

  • Fly Zappers and Residual Sprays can be used effectively in outside areas around dumpsters, etc
  • Fly Traps are hygienic, effective, and safe to use. Even around food.
  • Pyrethrum Fly Sprays. Safe, non toxic, but keep 8 feet away from food preparation.

3 Step Fly Treatment & Control Method

The majority of flies breed outdoors and scour the immediate area for food.  Flies inside means there is a problem lurking close by.

Trash cans are a major breeding source for filth flies.

  • Dumpsters and trash cans should have tight fitting lids. Keep the lids closed.
  • Trash containers should be stored in a tightly sealed room (outside or inside) adjacent to the main structure
  • Placing trash in plastic bags reduces odors that attract flies. Tie bags tightly to avoid leaks.
  • Keep far way from entrance ways
  • Have frequent trash pickups


Sanitation is the key to avoid fly infestations, especially for restaurants and other food handling and storage areas, but should also be properly exercised in any structure.

Small flies such as fruit flies and drain flies do breed indoors and can quickly populate from very small amounts of decaying organic matter. This can make finding and eliminating breeding sources quite difficult, as even the smallest cracks and crevices could contain a potential breeding site.

  • Empty and clean trash containers regularly
  • Wash floors daily and thoroughly, with CLEAN mops. Slop water will spread under hidden places such as mold boards and crevices and create ideal breeding sites.
  • Clean drains and floor drains. Phorid flies develop within the thin moist film lining these drains.
  • Investigate and clean cracks, crevices, and voids of organic particles. Properly seal them if needs be.
  • Clean all places where meat and cheese has been stored.
  • Cut, cure, and wrap meat in wax or grease proof paper.
  • Store meat in a clean, well ventilated area

Moisture Control
Many flies require moist areas for breeding. Over-watered soil found in flower pots. wet and dirty mops, wet floors and drains should be eliminated.

Animal Manure
A very common breeding source of flies.  Farms, stables, and other similar areas are plagued with flies and will infest areas surrounding them, and is something you just cannot eliminate.

Adjacent Properties
Flies can travel some distance and many fly infestations originate from breeding sources near the area. Examine adjacent properties for possible breeding sources


Flies are attracted to buildings because of the preferred temperatures radiating from them.

  • Seal windows with tight fitting screens if the windows are opened.
  • All doors should be equipped to self close as well as supplementary screen doors. There should be no tears and check all edges are properly sealed.
  • Repair and seal exterior cracks and crevices are they are an easy entrance for flies.
  • Overhead doors and other ventilation openings are often left open during warm weather. Framed screening or mechanical screen doors should be installed.

Fly lights

Fly Lights are the silent and hygienic way of fly control. Once attracted they are stuck on the sticky glue board. They also double as a monitoring device which can alert or provide clues to other fly infestations, depending on the type of flies you catch..

  • Use Indoors
  • Hygienic and Safe – OK to use in Food Areas
  • Silent Discreet Operation
  • Low Maintenance
  • Attractive designs, for human traffic areas

Proper placement of Fly lights is crucial and most failures are due to using not enough fly traps or improper placement.

  • Place traps no more than 50 feet apart. Flying insects won’t respond to the light if it’s too far away.
  • Run 24 hours, 7 days a week.
  • Place in an area with maximum exposure to the flies.
  • Within 12 to 25 feet of entrance ways.
  • Mount within 5′ from the ground. Flies spend a lot of time skimming surfaces for food.
  • Keep traps away from competing light sources such as windows.
  • Install at ceiling level above large doors to capture insects at night where typically rest.
  • Replace bulbs every season to ensure maximum attractancy as UV effectiveness diminishes over time.
  • Replace glue pads regularly when full, or every 4 weeks.

Fly Zappers

Fly Zappers are the successful predecessor to the light trap and are still effective today. Light attracts and the powerful electric grid kills on contact creating a popping/zapping sound, hence the “fly zapper” name. However, the flies would explode, possibly sending pieces of the fly to surrounding areas. This makes zappers not suitable around food, but excellent for other areas.

  • Garbage areas
  • Entranceways
  • Warehouses
  • Use Fly Traps with glue boards in “no zapper” areas

Once again, proper placement and the usage of enough fly zappers is vital

  • Place 5-8 feet off the ground
  • Place zappers no more than 50 feet apart.
  • Within 12 to 25 feet of entrance ways
  • Keep zappers away from competing light sources such as windows.
  • Run 24 hours, 7 days a week.
  • Replace bulbs every season to ensure maximum attractancy as UV effectiveness diminishes over time
  • Indoor and Outdoor models are available
  • Shatterproof bulbs available on some models

If you are using a Bug or Fly Zapper outdoors to eliminate biting flies.

  • Place 5-8 feet off the ground
  • Between you and the areas where flies congregate
  • Place farther away for biting flies, as you don’t want to attract them close to you.

Fly Spray Treatment
Residual Fly Spray

Most flies tend to stay within their own restricted locale. They rest at night for several hours in one spot, and because of this, are vulnerable to residual fly sprays.

  • Outdoors – Spray fences, walls, etc around breeding grounds. Flies do not typically travel far to rest
  • Indoors – Barns, stables, areas that do not conflict with the areas below
  • Do not spray where accessible to children or animals
  • Do not allow spray to come in contact with food or water
  • Not suitable for classrooms, hospitals, etc

Pyrethrum Fly Sprays

A natural, safe, and effective formula available in a hand-held and automatic release.

  • Pyrethrins are natural insecticides
  • Safe to animals and humans
  • Outdoors
    Use on porch areas, patios, etc
    Spray cattle and animals
  • Indoors – anywhere, but must be 8 feet away from food
  • Automatic dispensers and hand-held sprays available

Whilst DIY and cleaning will help control flies, however this may need to be followed though with a fly pest control service for best results such as Pest Control Auckland Fly Control or Auckland Carpet Steam ‘n’ Dry Fly Control Auckland. Also look at the variety of services they offer. Many fly pest control companies also offer regular maintenance to ensure the flies do not return. Some Auckland fly control companies can treat the home for several pests, depending on the range of issues you’re facing. When hiring a fly control company, the key is a proposal tailored to your needs and budget. The rest will fall into place as you start treating the problem and gaining the benefits of a flyt-free home.

Call Pest Control Auckland on 0800 783 266