ok get like 2 fans, i had a big one and a small one so i dont think size matters just air flow. close all windows in the room and the door(I suggest doing this at night while your sleeping to get maximum effect.) and stuff a towel underneath to block out all the hole. turn the fans on high and wait roughly 10 hours. after that, crack the window(if there is one) and open the door completly. within about an hour it should work. gl with that.