Take a gander at the ingredients on an herbicide or pesticide label and you'll note that "other"  or "inert" ingredients significantly outweigh the active ones.

So what's in there? 

If you casually surf the web to learn about the safety of a particular lawn chemical, you may walk away feeling comforted by information provided by the US EPA or the company selling the chemical. However, there's a solid body of research indicating that the health and environmental problems associated with these products are cause for concern. What's with the conflicting information?

In this article, I'll explore some factors that contribute to our haziness around lawn chemical safety. Understanding these variables allows us to read safety claims with a critical eye.