When choosing between plastic and metal outdoor trash cans, durability is often the deciding factor. Many people assume metal is inherently stronger, but the reality is more nuanced. Modern heavy-duty plastic trash cans made from polyethylene or resin can surprisingly outperform metal in several key areas.
Plastic trash cans won't rust, which is a significant advantage in rainy climates or near ocean salt spray. They're also typically UV-treated to resist sun fading and cracking. However, extreme temperature fluctuations can make some plastics brittle over time. Metal cans, usually galvanized steel, offer superior resistance to chewing pests and won't become brittle in cold weather. But they're prone to denting from impacts and will eventually rust if the protective coating chips away.
For general residential use, high-quality plastic cans often last 5-10 years with proper care, while metal cans can last 10+ years if maintained well. In commercial settings where abuse is common, thick-gauge metal might be the better investment despite its higher initial cost. Consider your specific climate, budget, and usage patterns – sometimes the "weaker" material actually provides better long-term value.