Cacodylic acid Calcium phosphide Carbendazim Captan Carbaryl Carbofuran Chitosan Chloralose Chloramine-T Chlorbenside Chlorfenapyr Chlorophacinone Chlorpyrifos Chloropicrin Chlorothalonil Chlortoluron Chromated copper arsenate Cinnamaldehyde Clofibric acid Clomazone Clopyralid Clothianidin Copper pesticide Copper(I) cyanide Copper(II) arsenate Copper(II) sulfate Coumatetralyl Crimidine Cycloheximide Cyhalothrin Cyromazine