Keeping an urban trash can securely in place on concrete might seem tricky, but with the right approach, it's straightforward. The best method depends on whether you need a permanent or semi-permanent solution and your comfort with tools.
For a highly secure, permanent installation, mechanical anchors are the gold standard. You'll need a concrete drill bit, a hammer drill, and concrete anchor kits (like wedge or sleeve anchors). Mark your drill points on the concrete, drill the holes to the specified depth, and then insert the anchor. Place your trash can (or a mounting bracket) over the anchor and tighten the bolt. This creates an incredibly strong hold that is virtually impossible to remove without tools.
If drilling isn't an option, a heavy-duty construction adhesive, such as a high-strength liquid nails formula designed for concrete and metal, is a viable alternative. Apply the adhesive to the base of the trash can and press it firmly onto a clean, dry concrete surface. Use weights to hold it in place for the full curing time recommended by the manufacturer. While strong, this bond can be broken with significant force and may leave residue.
A simpler, non-destructive solution is to use a weighted base. You can either purchase a commercial weighted pad designed for this purpose or create your own by filling a larger, flat container with sand or gravel. Place your trash can on top of it. The added weight at the bottom makes the entire unit much more stable and resistant to tipping, though it won't prevent determined theft.
For those with metal cans, high-strength industrial-strength velcro or magnetic locks can also be effective on clean, smooth surfaces. Ultimately, the best way is the one that balances your need for security with the practicality of installation. Drilling for mechanical anchors offers the highest security, while weighted bases provide excellent stability with zero damage to the concrete.