[2] Coumatetralyl is commonly used with grains and other cereals as a rodent poison in conjunction with a tracking powder to monitor feeding activity in a particular area.

Tracking powder also clings to fur, which allows more poison to be ingested from grooming.

The product must therefore be constantly present in the bloodstream for more than one to two days in order to be highly toxic.

A single exposure, even though relatively large, may not produce toxic symptoms as the compound is quite rapidly metabolized.

Chronic animal studies show no evidence of carcinogenic or teratogenic effects.