What to do if there are suddenly too many flies in the house?

What to do if there are suddenly too many flies in the house?

If a large number of flies suddenly appear indoors, do not rush to swat them, finding the breeding source is the key.

Step 1: Locate the breeding source

Flies do not appear out of nowhere; there must be a suitable breeding site nearby. Check the following key locations:

1. Garbage bins, is kitchen waste sealed? Is there liquid leaking from the bottom?
2. Drains, does the kitchen sink or bathroom drain have odors? Are pipes blocked?
3. Pet waste, is the litter box or dog toilet cleaned promptly?
4. Dead animals, check ceilings, storage rooms, and cabinet corners for decaying carcasses?
5. Outdoor sources, are there garbage piles or rotting plants near doors or windows?

Step 2: Clean and kill

After locating the source, clean it thoroughly. Then apply dinotefuran-containing household insecticide to surfaces where flies like to rest:

• Window frames and screens, flies rest here while waiting to enter.
• Light fixtures and ceilings, flies gather around lights in the evening.
• Corners and high walls, flies prefer to rest on walls above 1.5 meters from the floor.
• Garbage bin lids and surrounds, reduce fly activity near bins.

After spraying, the dried insecticide forms an invisible film. Flies that land on it die within hours; residual effect lasts about 2-4 weeks.

Step 3: Physical barriers

Repair torn screens; install weather stripping on door frames. Install transparent door curtains or air curtains at entrances for added effectiveness.