That's a great question, and a surprisingly common frustration! A missing trash bin on collection day is a real hassle. The good news is there are several effective, mostly low-cost ways to secure it.
The most straightforward method is to use a lock or latch. Many modern bins have built-in holes for a padlock or carabiner. Simply loop a lock through the bin's handle and the lid to prevent casual rummaging and make it much harder to drag away. For bins without built-in holes, a bungee cord with hooks or a heavy-duty strap can secure the lid to the handle.
If theft is a serious concern, anchoring your bin is the gold standard. You can use a ground anchor kit, similar to those for bicycles or motorcycles. Screw or cement an anchor point into a concrete pad or the ground next to your storage area, then use a sturdy cable or chain to tether the bin to it. This makes physical removal nearly impossible.
Strategic placement also helps. Keep your bins in a locked garage or shed when not out for collection. If that's not possible, place them in a well-lit area visible from your home. Motion-sensor lights are a great deterrent. You can also weight the bin down by placing a few bricks or a bag of sand at the bottom before lining it with a bag.
Finally, mark your property. Use a permanent marker or engraving tool to write your house number prominently on the bin. This won't prevent theft, but it makes it less appealing to thieves and helps neighbors or sanitation workers identify it if it's moved.
Combining a few of these tactics—like using a lock and keeping it in a lit area—will give you the best protection and real peace of mind.