The mouse pointer transforms into a can of Baygon, which has to be used to kill the insects that invade the screen. On click, the can releases small spray shots. The idea is that people follow insects with the can until all are dead. A banner keeps score and displays "Don't let them bug you". After you've succesfully killed all the insects, the page goes back to normal and the banner reads: "Exterminate them with Baygon."