What Is... Soil Fumigants Posted by AttractingWellness on May 5, 2011May 10, 2011 Soil Fumigants Soil fumigants are a class of pesticides that form a gas when applied to soil. These gases kill pests that live in the soil that could otherwise disrupt plant growth and crop production. Share this:EmailPrintRedditTwitterFacebookTumblrLike this:Like Loading... Related