There are a few things you can do to clean suede vans. The first is to use a mild soap and water solution to clean the van. This will remove any dirt, dust, and other debris that may have built up over time. Next, you can use a vacuum cleaner to clean the interior of the van. This will remove any dirt, dust, and other debris that may have built up inside the van. Finally, you can use a hairdryer to dry the van off. This will remove any moisture that may have been present in the van over time.