Make sure your guests don't get things twisted. You told them you were having a house party and not a slumber party, right? You don't have to physically shove them out of the door; be subtle about it. But when it's time to say goodnight, grab a big black garbage bag and start cleaning up. Turn down the volume and switch to a playlist that has nothing but slow songs on it. Try something instrumental. After about 10 minutes, your place should start to clear out as your guests begin to take the hint. If this doesn't work, tell everyone that the cops called and although they don't have to go home, they have to get the hell up out of your place.