That's an excellent and practical question! The short answer is yes, most modern urban trash cans *can* be safely pressure washed, but it absolutely must be done with the right technique and precautions. Here’s a natural, real-world breakdown.
First, check the material. Most city bins are made of durable, rotationally molded polyethylene or galvanized steel, which can handle pressure washing. However, avoid using the highest, most concentrated setting directly on decals, locks, or hinges, as it can damage them.
The key is to use a wide-angle (40-degree) nozzle or a fan tip and maintain a safe distance of at least 12-18 inches. Start with a lower pressure setting to be safe. Always use a disinfectant cleaner designed for pressure washers *before* rinsing; the goal is to sanitize, not just blast debris around.
Crucial safety note: Always wear protective gear—safety glasses and closed-toe shoes are a must. The force can kick back hazardous debris and bacteria. Furthermore, contain the runoff water if possible, directing it toward a sanitary drain to prevent contaminating storm drains.
For heavily soiled bins, a pre-soak with a degreaser makes the pressure washing far more effective and allows you to use less pressure. In summary, pressure washing is a highly effective method for maintaining urban trash cans, but safety for the worker, the public, and the equipment itself should always be the top priority.