That's an excellent question that many people consider when purchasing outdoor trash cans. In most cases, standard outdoor trash cans do NOT come with liners included in the purchase. Manufacturers typically sell the bins alone, expecting users to supply their own bags. This approach makes sense because different locations and users have varying needs for liner size, material thickness, and replacement frequency.
You'll generally need to purchase trash can liners separately to fit your specific bin. When selecting liners, pay close attention to your trash can's dimensions - particularly the gallon capacity and opening diameter. Many home improvement stores and online retailers carry compatible liners in various sizes and materials, from standard plastic to more eco-friendly options.
Some premium or specialized outdoor trash cans might include a starter set of liners, but this is relatively uncommon. The separate purchase system actually works to your advantage, allowing you to choose liners that match your specific usage needs and environmental preferences. Just remember to measure your can before buying liners in bulk!