Hey—I’d treat this like a “least aggressive method first” job, because urban trash cans are usually powder-coated steel, painted metal, or heavy-duty plastic, and harsh solvents or scrubbing can dull or strip the finish fast.
Start by checking the can in an inconspicuous spot with whatever product you plan to use. Put on gloves and work in a ventilated area. Remove any loose paint flakes or dirt with a soft cloth or plastic scraper—never a wire brush or metal scraper.
For fresh marker or light tagging, warm soapy water and a microfiber cloth often do more than people expect. If that doesn’t lift it, try isopropyl alcohol on a cloth for marker ink, but don’t pour it directly on the can and don’t let it sit. Test first, especially on plastic.
For spray paint, use a graffiti remover that’s labeled safe for powder-coated metal or plastic, depending on the bin. Apply a small amount to a cloth or non-scratch pad, let it dwell for the shortest time recommended, then wipe gently. Don’t use acetone, lacquer thinner, MEK, or abrasive scouring pads on powder coat—they can cloud the surface. On plastic bins, avoid harsh solvents altogether and use a plastic-safe graffiti remover.
Rinse thoroughly with clean water and dry with a soft cloth so residue doesn’t attract dirt or stain the finish. If the graffiti is stubborn, repeat gently rather than scrubbing harder. If it’s public property, check with the local maintenance team before using any solvent-based product.