That's a great question, and one many people consider when choosing or maintaining an outdoor bin. The short answer is: yes, it is generally very easy to replace the liners in most standard outdoor trash bins. The process is designed for convenience.
Typically, you simply lift the lid, pull out the full bag by its gathered edges, tie it off, and dispose of it. Then, you open a new liner, place it inside the can, and fold the top edges over the rim of the bin to secure it. For bins with a swing lid or a top ring, you often tuck the bag's edges underneath that ring to keep it neatly in place.
A few tips make it even easier: using the correct size and heavy-duty bags designed for outdoor use prevents tears. For deeper bins, sometimes placing a new liner at the bottom before removing the full one can help, as the weight of the old bag pulls the new one into position. While some specialty bins might have integrated liner systems, the vast majority of classic outdoor receptacles follow this simple, user-friendly design. So, you can expect liner replacement to be a quick and straightforward part of routine cleanup.