That's a great question! Dealing with a deep outdoor trash can where the bag always slips down or collapses can be really frustrating. After trying various methods, I've found a few that work reliably well.
The most effective way is to use the can's rim itself. Simply place your large, durable trash bag into the can, then pull the top edges over the entire rim of the can—like cuffing it over. This creates a solid anchor point. For extra security, especially on windy days, use a heavy-duty bungee cord looped around the circumference of the can, over the bag, to hold it firmly in place.
Another good trick is to use binder clips or strong spring clamps. After pulling the bag over the rim, clip it at several points around the edge. This is a low-cost and highly effective solution.
For a permanent fix, consider installing simple hooks or cup hooks on the outside lip of the trash can. You can then hook the bag's drawstring or its reinforced edges onto these hooks, preventing any slippage.
The key is to ensure the bag is large and strong enough for the can and to create an anchor point at the very top. This prevents the bag from falling in and makes removal much cleaner. Happy cleaning