I could do "pest control" and be very good at it. But most people lack the patience for my methods.
If my mom had sprayed them like she wanted to they would have come back in two months when the spray wore off. She would have killed the helpful spiders that are keeping things in balence, and the carpenter ants would have exploded in population freaking her out more.
To shape an ecosystem (our homes are ecosystems) you must observe and understand it first.
futurebird