That's a great question, and a common frustration in cities where wind can turn a tidy street into a mess in minutes. The best way to secure the lid really depends on your specific bin, but a combination of methods often works wonders.
First, the simplest solution is to use a weighted object. Place a heavy, weather-resistant brick, a smooth river rock, or even a sandbag directly on top of the lid. This adds downward pressure, making it much harder for the wind to get underneath and flip it open.
If your can has handles, a bungee cord or a heavy-duty elastic strap is a fantastic, low-cost option. Simply hook the cord from one handle, over the lid, and to the opposite handle. This creates a strong, flexible hold that keeps the lid firmly in place while still allowing for easy removal when you need to take the trash out.
For a more permanent and discreet solution, consider installing lid locks or latches. You can find adhesive-backed straps or drill-in bolt latches at most hardware stores. These physically prevent the lid from lifting more than an inch or two, effectively stopping any litter from escaping.
Another clever DIY hack is the "lid within a lid." If you have a spare lid from a broken bin or can find one, cut a hole in the center of it and place it upside down inside your main trash can, resting on the bag's rim. Then, place your regular lid on top. This creates a double-barrier that wind has a very hard time penetrating.
Ultimately, keeping your neighborhood clean starts with a securely fastened lid. A weighted object or a bungee cord are the easiest places to start, and they make a world of difference.