Small flies hovering around the sink, drains, or fruit bowl are drain flies or fruit flies. Here is how to tell them apart and get rid of them for good.
What Are Those Tiny Flies?
Small flies that appear out of nowhere in Melbourne kitchens and bathrooms are almost always one of two pests: fruit flies (small, tan-brown, red-eyed, hovering around fruit and bins) or drain flies (tiny, fuzzy, moth-like, sitting on tiles near sinks and showers). They breed in different places, so identifying which one you have is the key to getting rid of them.
Fruit Flies: Fast Breeders in Your Kitchen
Fruit flies lay eggs on ripe and fermenting produce, in bins, recycling residue, and even the thin film inside drink bottles and drains. The lifecycle takes about a week, which is why a few flies become a cloud so quickly.
- Refrigerate or cover ripe fruit; discard anything overripe
- Empty and rinse bins, and rinse recycling - especially beer, wine, and juice containers
- Clean under and behind appliances where a stray potato or juice spill breeds thousands
- A simple trap (apple cider vinegar with a drop of dish soap) knocks down adults while you remove the source
Drain Flies: Living in the Gunk
Drain flies breed in the organic film that coats the inside of drains, overflow pipes, and rarely used floor wastes. They are common in bathrooms, laundries, and commercial kitchens - and a sudden boom can signal a deeper plumbing issue like a partial blockage or a broken pipe under the slab.
- Scrub accessible drains with a stiff brush and flush with boiling water or an enzyme drain cleaner
- Run water through floor wastes weekly so the trap does not dry out
- Bleach alone does not work - it flows past the film the larvae live in
- Persistent drain flies despite cleaning suggest a hidden breeding site - under the slab, in a wall, or a broken sewer junction
When Small Flies Point to a Bigger Problem
A persistent small-fly problem that survives cleaning usually means a breeding site you cannot reach: a broken drain under the building, a dead animal, or organic build-up in wall voids. Commercial kitchens see this constantly. Professional treatment identifies the true source, treats the harbourage with products that reach where cleaning cannot, and breaks the breeding cycle.
Prevention Checklist
- Keep fruit covered or refrigerated in summer
- Rinse recycling and keep bin lids tight
- Flush and clean drains monthly, including floor wastes
- Fix dripping taps and standing water under sinks
- For cafés and restaurants, include drains in your regular commercial pest program - small flies are a common audit failure
Tiny flies that keep coming back no matter how much you clean? Pest Eraze finds and treats the source for homes and businesses across Melbourne. Call 0416 528 547.
