Watch the roaches crawl around. They like the dark so they will tend to hide under the rug. Drag the rug away to get them moving around again. If you want to wreak some havoc on them click the spray can to pick it up then hit the space-bar to spray.
Idea: Simulate the behavior of a cockroach by programming a bug sprite to scamper around the screen until it finds a "dark" place to hide under another sprite. Use clones and set their size at random and have them grow to adult and some of them die. Make a can of raid so you can spray them to kill them off... move furniture so they scatter etc. Make them come in through a vent or something....
