To keep flies out of your house, you need to block how they get in, remove what attracts them, and use safe deterrents and traps around doors, windows, and bins. Here’s a practical, step‑by‑step guide with some forum‑style tips and “real life” tricks woven in.

Quick Scoop

  • Close or screen doors and windows, especially in warm months.
  • Keep bins clean, sealed, and away from doors; never leave food or pet waste exposed.
  • Wipe crumbs, spills, and standing water quickly; fix leaks and damp areas.
  • Use natural repellents like basil, mint, citrus, and lavender around key entry points.
  • Add traps and light‑based or sticky devices if flies are already inside.

1. Close the “doors” flies use

Flies almost always come through obvious openings, tiny gaps, or around light.

  • Keep windows and doors closed when you can, especially at dusk and night when lights attract insects.
  • Install fly screens on frequently opened windows/doors (kitchen, patio, balcony) so you can ventilate without inviting flies in.
  • Seal cracks and gaps around frames with caulk or weather stripping; even small gaps can act like “fly highways.”
  • Turn off or dim bright lights near open doors and windows at night, or close curtains/blinds to reduce attraction from outside.

Think of every crack, vent, and open window as a “fly gateway” — your goal is to make every gateway either closed, screened, or unattractive.

2. Remove what attracts flies (food, rubbish, and moisture)

Flies stay where food and breeding spots are easy: rubbish, crumbs, pet waste, and damp patches.

Kitchen & dining areas

  • Keep all food covered, especially cooling dishes, fruit bowls, and pet food.
  • Wipe counters and tables right after cooking or eating so there are no crumbs, grease, or sticky patches.
  • Rinse plates and pans instead of leaving them with food stuck on them in a warm room.
  • Clean drains and garbage disposals regularly; trapped organic gunk is a hidden fly buffet.

Bins and rubbish

  • Use bins with tight‑fitting lids indoors and outdoors.
  • Empty kitchen bins frequently, especially in hot weather or after throwing away meat, fish, or fruit.
  • Move outdoor bins away from doors, windows, and vents so flies congregate far from your entry points.
  • Hose and scrub bins with soapy water or a mild disinfectant when they’re emptied to remove residue and smell.

Pet areas and other mess

  • Pick up pet faeces promptly in the garden and litter trays; it’s a prime breeding site for flies.
  • Wash pet bowls often and don’t leave wet food out for hours.
  • Fix leaks and clear standing water (under sinks, around washing machines, in bathrooms and basements).

3. Use natural repellents around entry points

You can make your home “smell wrong” to flies without using harsh chemicals.

Herbs and plants

  • Place pots of basil, mint, lavender, or marigold on window sills, near doors, or on balconies; flies dislike their scent.
  • Plant these herbs in outdoor beds or containers along the paths flies might take toward your doors.

Scents and simple DIY tricks

  • Scatter fresh orange peel, lemon peel, or citrus slices on a plate near windows or bins; refresh regularly as they dry out.
  • Push whole cloves into an orange or apple and place it near your problem area as a low‑effort repellent.
  • Use citronella candles outdoors (patio, porch, garden seating area) to keep flies from gathering at doors.
  • Mix a light pepper‑and‑water spray and mist around door frames and window frames where flies tend to cluster.

These don’t usually eliminate flies on their own, but they help shift the balance so fewer flies even try to come in.

4. Add traps and devices if flies are already inside

If flies are already buzzing around, pair prevention with ways to catch or kill them.

Simple DIY traps

  • Bottle trap: Cut a plastic bottle in half, fill the bottom with sugar water or fruit scraps, and invert the top as a funnel. Tape together and place away from your dining areas; flies go in and struggle to escape.
  • Fruit bowl trap: Cover a small bowl of fruit scraps or vinegar with cling film and poke tiny holes; flies squeeze in for the smell and can’t easily find their way out. (A popular forum hack is to use a takeaway tub for this.)

Light and sticky traps

  • Use indoor light traps that attract flies to a light and either zap or trap them; mount them indoors away from doors/windows and within about five feet of the floor.
  • Hang sticky fly strips in rooms where flies gather but away from food preparation and out of children’s reach.

More “hands‑on” gadgets

  • Some people on forums swear by “salt guns” that knock flies out of the air with a tiny blast of salt — they can work, but think about salt clean‑up and eye safety if you go this route.

5. Outdoor habits that make a big difference

Stopping flies before they reach your walls cuts indoor pressure dramatically.

  • Keep outdoor eating areas clean: wipe tables, pick up food scraps, and clean grills after use, especially in summer.
  • Don’t let rubbish bags sit open on balconies or next to back doors; get them into a lidded bin quickly.
  • Use plants like lavender, basil, and nasturtiums near seating areas and along pathways to subtly repel flies.
  • Turn off bright outdoor lights when they’re not needed, especially near doorways.

6. If you’re dealing with a real infestation

If you’re seeing lots of flies daily and new ones keep appearing, there might be a hidden source.

  • Check for hidden food spills (under appliances, in cupboards, under furniture) and clean them up thoroughly.
  • Look for very damp areas, rotting wood, or organic material in basements, garages, or outbuildings that might be acting as breeding sites.
  • Consider short‑term targeted insecticides or professional pest control if you can’t locate the source or the number of flies explodes, especially in food‑handling businesses.

7. Quick reference table

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Problem area What to do Why it helps
Doors & windows Keep closed when possible, add fly screens, close blinds at night. Blocks main entry routes and reduces light attraction.
Kitchen & counters Cover food, wipe spills and crumbs quickly, clean drains. Removes food smells and breeding spots.
Bins & rubbish Use lidded bins, empty often, clean bin surfaces, move bins away from doors. Stops flies congregating and breeding near your house.
Pets & garden Pick up pet faeces, clean bowls, remove outdoor food scraps. Removes top breeding and feeding sites.
Natural repellents Use basil, mint, lavender, citrus peels, cloves, citronella candles. Makes key areas less attractive by scent.
Traps & gadgets DIY bottle traps, fruit/vinegar traps, light traps, sticky strips. Catches flies that make it indoors.

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  • Focus keyword to weave into headings and early sentences: how to keep flies out of your house.
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Learn how to keep flies out of your house with simple cleaning habits, natural repellents, and smart traps that really work, indoors and out.

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