That's a great question, and it's definitely something you should check before making a purchase. Most reputable manufacturers of outdoor trash cans, especially those designed for commercial or heavy-duty use, do offer a warranty. The specifics, however, can vary quite a bit.
Typically, warranties cover defects in materials and workmanship under normal use. This might include issues like cracks in the plastic, rusting that isn't due to environmental damage, or broken hinges that fail under standard operation. The length can range from a 1-year limited warranty to lifetime guarantees on certain components, like the powder-coated steel body.
It's crucial to read the fine print. Most warranties do not cover damage from misuse, accidents, improper cleaning with harsh chemicals, or normal wear and tear. Also, the warranty is often valid only for the original purchaser, so keep your receipt.
For peace of mind, I recommend looking for brands that clearly state their warranty terms on their website or product documentation. A strong warranty often reflects the manufacturer's confidence in their product's durability. Always register your product if required to activate the coverage.