Readers' Digest Rodenticides

Saturday July 14, 2012


Mr Pest Control


Could you tell me a little about rodenticides? A history of the transition from multiple dose to single dose, acute vs. anticoagulants, their toxicity to humans and the different classes of them?

Marcus F., FL

Mr Pest Control


This is a pretty wide topic, so this will be a very abbreviated history as I can remember it. Certainly the first toxicants used to kill pest rodents were natural substances that were available in plants or minerals, such as arsenic (a mineral), cyanide (from a family of salts but also present in many plants), and strychnine (from the seeds of a tree). These are all extremely acute poisons that killed any animal that ate the bait laced with them, and bait avoidance due to eating sub-lethal doses was a possible concern along with the deaths of too many unintended animals. Other early active ingredients included Red Squill, Thallium sulfate, ANTU, and 1080, and each had its benefits and its problems. Another early product was zinc phosphide, and of course this and strychnine are still used in a limited number of rodent baits today. 

In the 1940's anticoagulants were more or less discovered by accident, ... Read more

Register now for Premier Services to get instant access to all of Mr. Pest Control's in-depth answers!

Read Complete Answer Register Now Ask a Question Add to My Favorite Questions Back  |  View Past Questions  |  View Questions by Category  |  Share on Facebook  |  Share on Twitter

Please note, Mr. Pest Control is answering questions supplied by PMP customers across North America. His answers are generated from industry and manufacturer-provided information. The answer may not be specific to the laws and regulations for your State, Province, Territory or Country. In addition, products mentioned may not be registered and or available in all areas. Always check with your local Univar office for specific information to your area. Always read and follow label directions.

Sponsor Ad