The types and sizes of dumpsters you should offer depends on your target market. If you're serving residential customers, smaller dumpsters for home cleanouts or minor renovation projects may be in demand. For commercial customers or construction sites, larger roll-off dumpsters might be needed. Specialized dumpsters, such as those for yard waste or recyclable materials, might also be useful. Understanding your customers' needs is key - you might conduct market research or simply ask your customers what types of dumpsters they would find most useful.