It's an unfortunate reality that we over rely on chemicals in our modern society. I say unfortunate as so many of the "wonder chemicals" that have been used have been discovered to be extremely dangerous, even fatal. Unfortunately, all too often these discoveries are made after damage to people or the environment has reached catastrophic levels.
The important thing when using chemicals is a good understanding of their makeup, known and potential risks, and most importantly, responsible use. Often, risks can be eliminated simply by avoiding use of chemicals altogether. Chemicals are not the answer to all problems, we apply this to termite protection too!
See some older advertising for DDT, the problem was not only it's proper use, but it's unprecedented over use.