Keeping your outdoor trash can secure is a common challenge, whether you're trying to deter clever raccoons, strong winds, or simply prevent spills. The "most secure" lock often depends on your specific needs, but a few mechanisms stand out for their reliability.
For the ultimate in security, a keyed cam lock is a top contender. This type of lock uses a key to turn a metal bar (the cam) that hooks into a strike plate on the lid. It's very difficult for animals to pry open and offers excellent security against human tampering. The main drawback is that you must keep track of the key.
A fantastic key-free alternative is a combination lock or a number code can lock. These allow you to secure the lid with a customizable numeric code. They are highly convenient and eliminate the risk of losing a key, while still providing a robust physical barrier against pests.
For a simpler, low-tech solution, consider heavy-duty bungee cords or a ratcheting lid strap. These are highly effective at creating tension that animals find difficult to overcome. While not as impenetrable as a solid lock, they are affordable, easy to install, and work remarkably well against most wildlife.
Ultimately, the most secure setup often involves combining methods, like using a built-in lock along with a bungee cord for added tension. Assess your primary threat—whether it's curious bears or neighborhood pranksters—to choose the lock that gives you the best peace of mind.