There are many flies in a house primarily because flies are attracted to decaying organic matter such as garbage, food scraps, pet waste, and compost. Flies enter through open doors, windows, or cracks and find favorable conditions indoors—warmth, moisture, and food sources—to breed and multiply rapidly. Flies can lay hundreds of eggs in moist areas like trash, drains, or damp corners, leading to a large infestation if not promptly addressed. Warm weather also accelerates their breeding cycle. Additionally, houseplants with moist soil or areas with leaky water or condensation can create breeding grounds for specific flies like fungus gnats. Key reasons for many flies in a house include:
- Presence of decaying organic matter or food waste
- Open doors, windows, or cracks allowing entry
- Warm temperatures aiding breeding
- Moist environments such as leaky taps, sinks, drains, or overwatered plants
- Flies breeding inside, for example, in trash bins, potted plants, or drains
To stop the influx, it is essential to maintain cleanliness by removing food waste and trash regularly, sealing entry points, fixing leaks, and drying out damp areas. Using fly traps and keeping food sealed also helps control the situation before it worsens.
