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Toxicants & Fumigants

Definitions--See Glossary

Toxicant--substance used to poison a problem animal, typically through ingestion.

Fumigant--gas used to poison a nuisance animal as it breathes.

General Use Pesticides (GUP) may be purchased over-the-counter.

Restricted Use Pesticided (RUP) require a pesticide applicator's license to purchase and use.

Secondary poisoning-Injury to an organism that ate the animal that was poisoned originally.

Facts about PesticidesUse of phostoxin to poison priarie dogs. Photo by Dallas Virchow

  • No one can guarantee where a poisoned animal will die.
  • No pesticide can be called "SAFE". You can only use pesticides more safely or less safely.
  • Most negative incidents with toxicants and fumigants occur because the applicator failed to follow the instructions on the label.

Active Ingredients

Fumigants

1. Phosphine Gas

2. Charcoal-Potassium Nitrate

Toxicants

Anticoagulants

First Generation Active Ingredient Feeding
  Warfarin Mult-feed
  Chlorophacinone Multi-feed
  Diphacinone Multi-feed
Second Generation    
Bordifacoum Single Feed
  Bromadiolone Single Feed
  Difenacoum Single Feed
  Difethialone Single Feed

Non-Anticoagulants

Active Ingredient Feeding Mode of Action
Bromethalin   Interferes with the animal's nervous system
Cholecalciferol   Interferes with calicum
Zinc Phosphide    

Zinc Phosphide

Resources

Bait Station Use--Bait stations for rats and mice Univ. of Nebraska-Lincoln

Resources on Anticoagulant Toxicants--New Zealand Govt. Publication

Toxicant Risks--Univ. of Arizona

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