What features make a trashcan "animal-proof" for a campground landscape facility?

Imagine you're a trash can stationed in a bustling campground. Your sole purpose? To be the unwavering guardian against curious paws, clever snouts, and determined claws. To earn the title "animal-proof," I must be built not just for convenience, but for a silent, steadfast duel with nature's most persistent scavengers. My first line of defense is my brain—the locking mechanism. A simple flip lid is an invitation. True prowess lies in complex latches, often requiring opposable thumbs or a specific tool to open, baffling even the smartest raccoon. My strength is in my shell. I am constructed from fortress-grade materials like heavy-duty polyethylene or galvanized steel. I must resist dents from bear swipes, punctures from sharp teeth, and the relentless fading from the sun. My stance is crucial. I am either born immensely heavy, or designed with anchor points that tether me deeply to the earth, making me impossible to tip or roll away for a midnight feast. My form is sleek, with no edges or footholds for climbing. Even my scent must be contained; I feature tight seals that trap odors inside, sending no delicious signals on the breeze. Finally, my design is intuitive for my human allies—easy for them to use with clear instructions, ensuring my defenses are always properly engaged. To be animal-proof is to be a patient, resilient sentinel, allowing campers to enjoy the wild beauty while I stand watch, ensuring that the only visitors at camp are the invited ones.