During game play, have the screen to where you want to damage some bugs. Then,
type PESTCONTROL as a code. A sound will confirm correct code entry, and red 
crosses will form over every bug on the screen. You will hear a beeping noise
and the crosses over the bugs will begin to flash. You then will see an 
explosion on every bug that had a red cross over it. All the bugs that were on
the screen at the start of code should have died or have lower health. 
Note: Once you activate this code, you will see a bar at the right corner of 
the screen. You must allow the bar to refill all the way before repeating the
code.