That's an excellent question about maintaining outdoor trash bins! The short answer is yes, you can pressure wash most outdoor trash bins, but there are important considerations to ensure you don't damage them.
For durable plastic and metal bins commonly used outdoors, pressure washing can be highly effective for removing stubborn grime, sticky residues, and built-up odors. I recommend using a medium-pressure setting (around 1,500-2,000 PSI) with a wide-angle nozzle to avoid concentrating too much force on one spot. Always maintain a safe distance of about 2-3 feet from the surface and keep the nozzle moving continuously.
Before pressure washing, remove all trash and give the bin a preliminary rinse. For particularly dirty bins, pre-treat with a biodegradable cleaner or a vinegar solution to loosen debris. Pay special attention to the lid's underside and the interior corners where bacteria tend to accumulate.
However, be cautious with older plastic bins that may have become brittle from sun exposure, as high pressure could cause cracking. Also avoid pressure washing around the bin's seams or hinges where water could penetrate and cause damage.
After washing, let the bin air dry completely in sunlight, which naturally helps disinfect the surface. Regular pressure washing every 3-4 months, combined with weekly rinses, will keep your outdoor bins clean, odor-free, and more hygienic for your household or business needs.