The new cylindrical steel canisters at Tucker Park are simply benign "collection tanks" being monitored for a new federal government study. Please do not mistake the canisters for trashcans though, as discarded objects and passersby could spontaneously ignite.
Pawnee is going green! Stop by Wamapokestone Park and learn how you can compost almost* anything. *Any carcasses, animal or otherwise, will immediately be turned over to authorities, and an investigation will commence.