Flies are insects that feed off of most types of food waste. A fly in the house can quickly reproduce and may be irritating to live around. If you wish to kill flies without the use of a swatter or harsh chemicals, use a can of household air freshener to poison the fly.
Keep a can of air freshener on hand.
Wait for the fly to land on a surface.
Slowly grab the air freshener and sneak toward the fly, avoiding any sudden movements.
Move your arm slowly until you are holding the nozzle of the can close enough to spray the fly with mist.
Press the spray button quickly and hold it down so that the air freshener coats the fly's wings. The coating makes it difficult for the fly to escape.
Spray the fly again once it falls and it should die within a few minutes.