Fruit Flies--Probably a stupid query but....? My 2 year old departed a half eat orange inside of a...

My 2 year old departed a half eat orange inside of a saloon model cardboard box in my oldest son's room---Flies be EVERYWHERE. I just discovered it this morning. Before after, I didn't know where they be coming from and made homeade traps. Some have died but some are smart plenty to find there instrument out of the tinest hole. So I got rid of the traps and found it easiset to spray them down next to water or windex...they enjoy no chance. Of course I know to receive rid of all food source. My house is spotless immediately. My stupid question is.....do you focus if I close the door to his room and open the pane, they will fly out or will more try to come in even though I enjoy gotten rid of the source.
Does anyone hold a glass-top stove?
Answers:    if you are sure the food source is gone they should disappear in a light of day or two. Leaving the window unambiguous should help as they will fly towards the insubstantial outside.