This is the mode of action by which these pesticides kill insects and harm humans. Problems with pesticide exposure can be significantly augmented when a person has chemical sensitivities. Let's consider the economic benefits of ladybugs, praying mantis, honey bees which are not only important ecologically, but economically as well. These beneficial insects are goners when these kinds of pesticides are used. These synthetic pyrethoids are also extremely toxic to fish and crustaceans.
Lobsters are actually more like an insect in their make-up than they are a fish.
Biodiversity is held hostage when we allow ourselves to spray first, think later. There is evidence that Resmethrin is an endocrine disrupter as well as a neurotoxin. We simply do not know all the possible harms as they have not been studied, nor do we understand the synergistic effects with other chemicals. It is also important to consider how effective spraying is. The CDC's 1999 chart showed that incidents of the virus dropped dramatically before the aerial spraying began.