They could smell the stench a mile away, all the trash, rotting in the stream. It even had steps down to the wretched water for anyone’s convenience when dropping off a few unnecessary items.That’s why they chose it. It was unmonitored, perfect for the disposal.
Harry and Moe had to dispose of it quickly. Dead cats deteriorate fast and they wanted to maintain their innocence. They had already cleaned the tires, washed the leftover bits off the sidewalk into the gutter, and repaired the bike. They found out cats can do quite a bit of damage. Neither boy liked cats.