11. Tokyo's rules also require 55 days of cold storage and fumigation with methyl bromide . 12. Methyl bromide is a more powerful ozone depleter than CFCs.13. Fumigation with a chemical such as methyl bromide or a six-step procedure was required. 14. Kempter said the use of methyl bromide would be considered on a case-by-case basis. 15. Another problem is methyl bromide , which is widely used as a pesticide in developing countries. 16. Banning methyl bromide could injure US agriculture without significantly helping the ozone layer, he argues. 17. Methyl bromide is one of the last of the major chemicals to be phased out.18. And now, methyl bromide , " which basically sterilizes everything," 19. In the United States, pressure groups keep working against a methyl bromide ban, said Rowland. 20. "But methyl bromide doesn't kill the root-feeding nematodes that can go down eight feet ."
