Flies & Mosquitoes
Bottle Fly
Shiny, metallic green or blue flies (also called blow flies) that breed in garbage and dead animals. Many indoors often means something has died nearby.
Quick facts
- Size
- 6–14 mm
- Colour
- Metallic green, blue or bronze
- Active season
- Spring to fall
- Where found
- Garbage, compost, dead animals, sunny windows indoors
How to Identify
- Shiny metallic body, larger than a house fly
- Loud, buzzing flight
- Large reddish eyes
Signs to Look For
- A sudden swarm of large shiny flies indoors
- Flies gathering at one window or room
- Maggots near garbage or a hidden source
Why It Matters
- Carry bacteria from decaying matter onto food
- Often point to a dead rodent or animal in a wall or attic
- Can lay eggs on uncovered food
Prevention Tips
- Use tight-fitting garbage lids and empty bins often
- Clean garbage cans regularly
- Keep window and door screens in good repair
More Flies & Mosquitoes
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Cluster Fly
Slow, sluggish flies that pack into attics and wall voids each fall, then appear on sunny windows.
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Drain Fly
Small, fuzzy, moth-like flies (also called moth flies or sewage flies) that breed in the slimy film inside drains and sewer lines.
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Fruit Fly
Tiny tan flies with red eyes that breed in ripe fruit, drains and anywhere sugary liquids collect.
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House Fly
The most common fly around homes and businesses.
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