Alien-Out! is a spray in Bikini Bottom. It just appears in the episode: Sandy's Rocket. As the name says it, it is used against Aliens. Patrick gives it to SpongeBob, because SpongeBob wants to go onto Sandy's Rocket to the moon. It has to be sprayed onto windows to work. SpongeBob and Patrick want to spray it all over Sandy's rocket, to stop the aliens from coming in, but it can't keep out burglars.
It is brown-green and an alien is drawn on it.