Thank you for your question. Fruit flies gravitate toward garbage. You should dispose of discarded fruit in tightly closed containers or by putting it down an in-sink garbage disposal. Wipe kitchen counters and wash cutting boards and utensils immediately after preparing your bird’s fruit and vegetables. Even a tiny bit of sticky residue will attract resident fruit flies.
Fruit should be kept in the refrigerator rather than in a bowl on the kitchen counter. If you must keep fruit out, check it frequently. As soon as it begins to age, the flies will return.
Empty and wash your birds’ fruit dishes after several hours. Change the paper liner on the bottom of the bird cage, and wipe fruit fragments from cage bars, floors and walls.