Maintenance fees (EPA) Malathion MCPA MCPB Metalaxyl Metaldehyde Metepa Metham sodium Methazole Methiocarb Methomyl Methoprene Metrifonate Metsulfuron-methyl Methylisothiazolone Metolachlor Milbemycin Milbemycin oxime Miticide Mode of action Molluscicide Monosodium methyl arsenate Monsanto Mothball MPP+ Myclobutanil Mycoherbicide