That's a great and very practical question! In the vast majority of cases, standard outdoor trash bins or garbage cans do not come with liners included when you purchase them. You will almost always need to buy trash bags or liners separately.
Think of it like buying a filing cabinet—it doesn't come with the folders. The bin itself is the durable, long-term container, and the liner is the disposable, replaceable part. This allows you to choose the size, thickness (like heavy-duty or contractor bags), and material of the liner that best fits your specific needs, whether it's for general household waste, yard debris, or recycling.
However, there are a couple of exceptions. Some premium or specialized compost bins might include a starter supply of compostable bags. Also, certain "all-in-one" kits or systems designed for specific purposes (like a patio cleanup set) may bundle a small roll of bags with the bin. But for the classic 32-gallon wheeled cart or a standard galvanized steel can, buying liners separately is the norm.
My advice? When you buy your new outdoor bin, check the product description or packaging carefully for phrases like "includes liners" or "bags sold separately." To be prepared, pick up a roll of appropriately sized, strong trash bags at the same time. This ensures you're ready to go as soon as your new bin arrives!