Answer:
Pros: Very easy to make because all you need is a cup or bowl, apple cider vinegar, and some dish soap.
Apple cider vinegar attracts fruit flies.
Used to eliminate flies.
Cons: Flies and ants both find apple cider vinegar appealing and will go to it.
It's a temporary solution, so a re-infestation of fruit flies can occur whenever you bring produce back into the house.