The way you clean your backpack will depend on the material you should always consult the care instructions first. Leather backpacks, for instance, should be professionally cleaned; fabric backpacks, on the other hand, can usually be hand-washed or machine-washed.
The first step in cleaning your backpack is to empty it completely, then run a vacuum nozzle along the seams to remove any hardcore debris. To clean the interior and exterior of the bathtub or sink, fill it with warm water and use a mild soap. While some backpacks can be washed in the washing machine, it’s vital to check the instructions on how to wash your bag before doing so.