Once you get a fruit fly infestation, it can be extremely difficult to rid your house of them! Here is how to get rid of them without having to use poison or insecticide.
First, remove the source of the fruit flies as well as anything they may be attracted to. This means you may need to store your apples in the fridge instead of in a basket on the counter until they are all gone.
Second, get a clean spray bottle and fill it part way with rubbing alcohol. Then spray the fruit flies with the rubbing alcohol. This will make them drop to the counter or floor, and you can then easily clean them up. It is much easier to get them this way than try and catch them while they are flying around!
Make your own fly paper