'No Thanks, We Have an Ecosystem'

Periodically, we get a knock on the door, and it’s a guy who wants to let us know that some of our neighbors have contracted with him to take care of their (cockroach/ant/black widow) problem, and to ask if we’d be interested in doing the same.

“Why would I want to do that?” I asked one of these men, perplexed. “Why would I want poison in my house? The a…