That's a great question, and one I had myself before buying my first one! The short answer is: it depends on the model and brand, but most outdoor trash bins require some assembly. They rarely come fully put together straight out of the box.
Typically, you'll receive the main body of the bin, the lid, the hinge mechanism, and sometimes the wheels or a latch separately. The good news is that the assembly is generally very straightforward. Most manufacturers include clear, step-by-step instructions, and you usually only need a basic screwdriver or an Allen wrench (which is often provided). The whole process often takes just 10 to 20 minutes.
The key is to lay out all the parts first and check them against the manual. The most common steps involve attaching the lid to the body with the provided hinges and screws, and then snapping or screwing on the wheels. It's designed to be a simple DIY task.
However, some premium or heavy-duty models might come more fully assembled, perhaps with just the lid to attach. On the other hand, cheaper or space-saving "flat-pack" models might require a bit more work. So, while you shouldn't expect a ready-to-use product right at your doorstep, you also don't need to worry about a complicated project. A little bit of easy assembly is standard, and it allows for more efficient shipping and packaging. Just set aside a few minutes when it arrives, and you'll be all set!