Major agricultural rodenticide types and mode of action
- Acute rodenticides (Zinc Phosphide 80% Technical): Single-dose fast-acting poison that releases lethal phosphine gas upon contact with stomach acid, killing rodents within hours.
- Anticoagulant rodenticides (Bromadiolone 0.005% Cake / Bait): Second-generation anticoagulant that inhibits vitamin K epoxide reductase, preventing blood clotting and causing painless internal mortality in 3 to 5 days.
- Pre-baiting requirement: For zinc phosphide, unpoisoned grain bait must be laid for 2 days to overcome rodent bait shyness before adding the active toxicant.
- Ready-to-use baits: Bromadiolone wax blocks and cakes are moisture-resistant, making them convenient for burrow placement and storehouses.
Field placement techniques for standing crops and granaries
- Live burrow identification: Inspect field bunds and close all burrows with soil on day one; apply bait only to burrows reopened on day two (live burrows).
- Deep placement: Spoon 10 to 15 grams of prepared bait deep inside active burrows (at least 15 cm inside) using a long bamboo spoon, and plug with soil.
- Bait stations: In warehouses and farm houses, secure bait inside tamper-evident bait stations to prevent non-target animal access.
- Community campaign: Organize village-wide rodent management synchronously during lean seasons (pre-sowing or post-harvest) for regional control.
Strict handling protocols, antidotes, and safety measures
- Non-target hazard: Highly toxic to poultry, domestic livestock, dogs, and wildlife; keep strictly out of reach of children.
- Antidote for Bromadiolone: Vitamin K1 (phytomenadione) administered under medical supervision serves as the specific antidote.
- Personal protection: Wear impermeable rubber gloves while mixing bait; never touch rodenticides with bare hands as human scent repels rodents.
- Carcass disposal: Collect and deeply bury all dead rodent carcasses to prevent secondary poisoning of scavenger birds and farm animals.
Official source
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Central Insecticides Board & Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What are the common chemicals used in chuha marne ki dawa?
Zinc Phosphide 80% (acute single-dose poison) and Bromadiolone 0.005% (anticoagulant bait) are the primary approved chemicals.
Why is pre-baiting necessary before using Zinc Phosphide?
Pre-baiting with plain grain for 2 days builds confidence in rodents, avoiding bait shyness and ensuring complete consumption of the poison bait.
What is the antidote for Bromadiolone rodenticide poisoning?
Vitamin K1 (phytomenadione) is the specific antidote for anticoagulant rodenticide poisoning.
How should rodent poison be placed in agricultural fields?
Place bait deep inside active reopened burrows on field bunds and seal the burrow mouth to protect farm animals and birds.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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