That's an excellent and practical question! The lifespan of an outdoor trash bin isn't a simple number, as it depends heavily on several key factors. For a typical residential plastic bin that's well-cared for, you can generally expect 5 to 10 years of service. However, with premium materials and ideal conditions, some can last even longer.
The biggest determinants are material and climate. Heavy-duty plastics like polyethylene are common; they resist rust but can become brittle from constant sun (UV exposure) and extreme temperature swings. Metal bins, often galvanized steel, are incredibly sturdy but are susceptible to rust if the coating is scratched and they're exposed to moisture. A coastal area with salt air will wear down a bin much faster than a mild, dry climate.
"Well-maintained" is the crucial part of your question. Simple practices dramatically extend life: regular cleaning to prevent residue buildup and corrosion, placing bins in shaded areas when possible, and avoiding overloading or putting in excessively hot ashes. Commercial-grade bins, designed for tougher use, often have 10-15 year lifespans.
So, while a decade is a good benchmark for a quality residential bin, your specific mileage will vary. Investing in a bin suited to your local weather and committing to basic care are the best ways to ensure you get the maximum number of years from your purchase.