<prompt> Zinc phosphide is -RodenticideInsecticideLarvicideAll  <response>: Rodenticides They are 2 groups: 1 Single dose acuteZinc phosphide and Barium carbonate, 2 multiple dosescumulativewarfarin, diphacinone, coumafuril, pindone. Zinc phosphide is an efficient single dose rodenticide. Rats are killed by about 3 hours. Due to the good safety record, low cost, and reasonably high effectiveness zinc phosphide is recommended for large scale use against rats. Parks Textbook of Preventive and Social Medicine, 25th Edition, Pg 847 