This is so clever, and so full of information. I lived in an apartment years ago that was infested by roaches. It was disgusting. However, it is important to note that roaches in the wild have a function. Because of their omnivorous habits, they are decomposers, nature's garbage pails. Also, they are essential food for other species. Because of their burrowing habits, they're good for the soil (in the wild!).
They are vile, disgusting creatures--in the home--and it seems once they have made your home their home, they are almost impossible to get rid of.
A great blog, @seki1
Indeed @agmoore, a cockroach infestation is something I awfully dread. Once I see and kill one scurrying in a room, I make sure to lockup and fumigate that room. Then search and destroy any stragglers.