Pet Food and Aminopterin: The irrational application of pesticides by Chinese farmers

Aminopterin is still the prime suspect in the food poisoning story that has claimed the lives of over a dozen pets, and quite possibly hundreds. Suspicion keeps coming back to the wheat gluten used as a base for the preparation of these foods by Menu Foods. The wheat gluten was imported by China, so I started reading some background on Chinese agricultural practises.

The application of pesticides has been descibed as "irrational" as recently as last October.