Yes—usually, but the key word is “carefully.” Many urban trash bins are designed to nest inside one another for transport and temporary storage, which is often the safest way to save space during off-season events. True vertical stacking—one bin sitting on top of another—is less common and should only be done if the manufacturer says it’s okay.
Before storing them, empty and clean each bin, let it dry completely, and remove liners or loose parts. Store bins on a flat, stable surface, preferably on pallets or racks, and avoid very high stacks. If bins have wheels or lids, secure them so they don’t roll or flap in the wind. Keep the storage area away from direct sunlight if possible, because long-term UV exposure can make plastic brittle.
Also check local regulations and your supplier’s guidance. Some bins are not meant to bear weight on their sides or lids, and heavy bins should never be stacked while loaded. In short, nesting empty bins for off-season storage is usually fine; stacking them high or improvising a tower is not worth the risk.