How do i win rid of fruit flies??gross!? So i left some food surrounded by my dorm over a break...

So i left some food surrounded by my dorm over a break and there are abundantly of fruit flies. D-: Does anyone know how I can get rid of them rapid? Like what do I buy?? Thanks!
What are some ways to recover on gas?
Answers:    They are such a pain. First sour make sure you attain rid of any food sitting out & clean adjectives surfaces with soapy wet. Dump the trash outside & spray the can with lysol. Then put a bowl of apple cider vinegar fundamental where they congregate. They're readily attracted to it, fall within & drown. My daughter did the same entry so I know it works.
How do you salvage a dry ball-point pen?
baking soda and suger