That's a very smart and practical concern. Vandalism to public trash cans is a costly and frustrating issue for cities and communities. Based on common municipal specifications and urban design principles, the most tamper-resistant cans typically share these key features.
First, look for bins constructed from heavy-gauge, galvanized steel. This material is far more resistant to cutting, denting, and impact damage compared to plastic or thin metal. A powder-coated finish can also help resist scratches and graffiti.
The locking mechanism is critical. The gold standard is a internal, tamper-proof locking bar that secures the liner bag and makes it extremely difficult to access contents without a specialized key. Bins with simple, external latches or no locks are easy targets.
Design also matters. A streamlined, robust design with minimal seams, gaps, or protruding parts offers fewer handholds and points of attack. Anchoring the bin permanently to a concrete foundation or sidewalk is a major deterrent, preventing tipping or theft.
For extremely high-traffic or problematic areas, consider "smart" solar-compactor bins. Their sealed design and compaction mechanism make them very resistant to tampering and reduce overflow, which itself can attract misuse.
In summary, prioritize heavy-duty steel construction, a high-security internal locking system, and permanent anchoring. While no bin is 100% invincible, these features present a significant deterrent and provide the best long-term value for managing urban waste securely.