That's an excellent and very practical question. Many people are drawn to metal trash bins for their sleek, professional look and sturdy feel, but the concern about denting is valid. The honest answer is: it depends significantly on the type of metal and its construction.
Generally, thicker-gauge metals like heavy-duty stainless steel or galvanized steel are highly resistant to everyday dents from bags of trash or minor bumps. They are designed for durability in commercial settings. However, no metal is completely impervious. A sharp, direct impact from a heavy or pointed object can potentially dent even a robust bin.
Thinner, lower-gauge metals or cheaper aluminum bins are much more susceptible to denting. They might be fine for light indoor use but can show damage quickly outdoors or in high-traffic areas.
To minimize denting, look for bins labeled "heavy-duty" or "commercial grade," check the metal gauge (a lower number means thicker metal), and consider reinforced corners or ribbed designs that add structural strength. While a high-quality metal bin may cost more upfront, its resistance to denting and overall longevity often make it the more durable and economical choice in the long run.