Evaluation of aversive agents to increase the selectivity of rodenticides with emphasis on denatoniu...

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" Evaluation of aversive agents to increase the selectivity of rodenticides with emphasis on denatonium benzoate (Bitrex) bittering agent "
Kaukeinen, Dale E.; Buckle, Alan P.

Document Type	:	AL
Record Number	:	942992
Doc. No	:	LA34w3g80b
Language of Document	:	English
Main Entry	:	Kaukeinen, Dale E.; Buckle, Alan P.
Title & Author	:	Evaluation of aversive agents to increase the selectivity of rodenticides with emphasis on denatonium benzoate (Bitrex) bittering agent [Article]\ Kaukeinen, Dale E.; Buckle, Alan P.
Title of Periodical	:	Proceedings of the Vertebrate Pest Conference
Volume/ Issue Number	:	15
Date	:	1992
Abstract	:	Aversive agents are proposed as potential additives to rodenticides to increase selectivity to the target species. Examples of various aversive agent categories are given, including odorants, tastants, and emetics, with examples of evaluations. Tastant additives have been found that do not interfere with rodenticidal efficacy. Denatonium benzoate (commercially available as Bitrex®) is an intensely bitter but non-toxic substance, being increasingly used to adulterate common household materials to reduce the potential risks involved with accidental exposures. No known prior research results have been published concerning the incorporation of Bitrex in rodenticides. Rate determination studies utilizing different rodenticidal formulations were conducted. A Bitrex level of 10 ppm was well accepted by wild commensal rats and mice in laboratory tests of brodifacoum pellet and wax block formulations (TALON®, KLERA T® rodenticides). Bait samples with this level of Bitrex (without anticoagulant) were evaluated in a human taste panel study. Samples with Bitrex were found to show significantly greater average rejection by the panel than similar samples without Bitrex. Field trial results are reviewed, which verified the efficacy of Bitrex-containing commensal rodenticides. The potential role of Bitrex or similar taste deterrents as rodenticide additives is considered opposite accidental toxicant exposure statistics, and perceptions relating to rodenticides and other pesticides.