11. Fungicides appear to be less toxic than fumigants . 12. California and Florida account for 80 percent of its use as a soil fumigant . 13. Fumigants are also applied directly to rodent burrows.14. Soil fumigants again account for the growth. 15. Used as a fumigant , spearmint essential oil is an effective insecticide against adult moths. 16. During the 1920s, scientists working at his institute developed the fumigant in grain stores. 17. It is widely used as a structural insecticide fumigant to treat termites and other pests. 18. Strawberries and tomatoes are the two crops with the most intensive use of soil fumigants . 19. Methyl bromide is a controversial fumigant . 20. Therefore, less fumigant would be needed to ensure that the soil would be completely sterilized.
