We have an omnipres­ence of antimi­cro­bial chem­i­cals. We can­not escape them any­more. They are in our water, in our air, in our soil, in our food. They are in the wildlife and they are in us. But iron­i­cal­ly, they are much more effec­tive in killing things oth­er than microor­gan­isms.