That's a great question! Yes, absolutely. Many outdoor trash cans are specifically designed with features to make changing bags much less of a hassle. The classic "liner system" you might be thinking of often comes in a few practical forms.
One common feature is a built-in drop-in ring or lip at the top of the can. You simply tuck the edges of your trash bag over this ring, which holds it securely in place and prevents it from falling into the can. Another popular option is a removable inner frame or holder. This is a lightweight wire or plastic frame that sits inside the bin; you attach the bag to the frame and then lift the entire frame out when the bag is full. Some higher-end models even have swing lids with integrated bag clips that pinch and hold the bag in place when the lid is closed.
The main benefits are clear: it keeps the bag from slipping, makes lining the can quicker, and helps keep the interior of the bin cleaner. When shopping, look for keywords like "bag-retention ring," "liner lock system," or "hands-free bag change." So, to answer your question directly – not only do they exist, but they are a game-changer for making outdoor cleanup a much smoother task.