Leaves inside my Car. Problem

Do you guys have noticed if Leaves are going inside your Front Passenger Side on the 2008 Mitsu Lancer?
 
 I always find leaves on the passenger side once a week and I have vacuum it once in awhile. I used my AC with the vent open. I have no problems with rain but not sure about the snow yet.
 
 
Can you please answer me? thanks

LOL..silly me
 
Forget it I just remembered I open my front windows under a Tree when leaves were falling. I parked my car for more than week.
 
open vent circulated the leaves but couldn't get out and it get stuck inside the front right passenger floor