The association of bait formulation of strychnine with poisonings in nontarget species in Saskatchewan from 1975 to 2007.

This study investigated the association of pre-mixed and freshly mixed strychnine baits with poisoning of nontarget animals in Saskatchewan. During years where the formulations were derived from a 2% concentrate, there was a greater than 2-fold increase in case numbers. There were approximately 3-fold fewer cases when the baits were prepared by pest control officers rather than by producers.