That's an excellent and very practical question! The short answer is yes, urban trash cans can be cleaned with a pressure washer, and it's often a highly effective method for municipal crews. However, "easily" depends on following the right technique to avoid damage.
Most modern urban trash cans, especially those made of durable polyethylene, powder-coated steel, or stainless steel, are designed to withstand routine pressure washing. The high-pressure stream is fantastic for blasting away stuck-on grime, food residue, and built-up stains that traditional cleaning might miss.
For the best and safest results, use a wide-angle (40-degree) nozzle tip and maintain a distance of at least 12-18 inches from the surface. This provides powerful cleaning without concentrating the force enough to chip coatings or crack plastic. Always use cold water, as hot water can sometimes warp certain plastics. It's also wise to pre-rinse loose debris and use a biodegradable degreaser for heavily soiled bins.
The real advantage is speed and thoroughness. What might take 20 minutes of scrubbing by hand can be accomplished in a few minutes with a pressure washer, making it a efficient choice for maintaining public hygiene in busy city areas. Just remember, gentle pressure from a distance is the key to making the job easy and keeping the bins in good condition for years to come.