That's a great question! A tipped-over trash can is a messy nuisance. Securing it to concrete requires a semi-permanent approach, but it's very doable. Here's the most reliable method.
The best way is to use a concrete anchor kit. You'll need a hammer drill, a masonry bit sized for your anchors, concrete screw anchors or sleeve anchors, a heavy-duty strap or bungee cord designed for outdoor use, and safety gear.
First, plan the placement. Position your trash can where you want it. Mark two spots on the sidewalk just outside the can's base for the anchors. Ensure they align with a sturdy part of the can's frame or a robust handle.
Next, drill the holes. Put on your safety glasses. Using the hammer drill and masonry bit, drill straight down into the concrete at your marks to the depth specified for your anchors. Clear the dust from the holes.
Then, install the anchors. Insert the concrete screw anchors into the holes. If using sleeve anchors, you'll tap them in and then tighten the bolt to expand the sleeve securely inside the concrete. The anchor head should sit flush or have a loop.
Finally, secure the can. Loop your heavy-duty strap, metal cable, or commercial bin lock through the anchor points and tightly around the body or handle of the trash can. The goal is to allow the lid to open but prevent the can from being lifted or blown over.
For a less invasive option, you can use a heavy, sand-filled weight base designed for patio umbrellas and strap the can to it. However, anchoring directly into the concrete provides the strongest hold against determined animals and strong winds. Just remember, this method will leave small holes in the sidewalk if you ever remove the anchors.