That's an excellent and practical question! The short answer is: it depends heavily on the material of the trash can. Using a pressure washer can be a fantastic time-saver, but it can also cause serious damage if done incorrectly.
For standard plastic municipal bins, you must use extreme caution. A high-pressure setting can crack, dent, or puncture the plastic, especially if it's old or brittle. Always use the widest spray nozzle (like a 40-degree white tip) and keep the wand at least 12-18 inches away. Start with a lower pressure setting to test.
Metal trash cans, typically galvanized steel, are more durable and can generally handle a pressure washer better. However, be mindful of forcing water into seams or hinges, which can promote rust from the inside. Avoid directing the stream at any painted labels or decals.
For composite or concrete-heavy public bins, pressure washing is often the standard cleaning method used by cities. The key is using appropriate pressure to remove grime without etching the surface.
Crucial Safety Warning: Never pressure wash a trash can that contains any hazardous materials, sharp objects, or organic waste that could aerosolize. Always wear safety glasses and closed-toe shoes. For deeply soiled bins, a pre-soak with a mild, eco-friendly detergent is more effective and safer than relying on brute water pressure alone.
In summary, yes you can, but it's not a one-size-fits-all solution. Assess the material, start gentle, and prioritize safety to effectively clean your urban trash cans without shortening their lifespan.