They do both. A well fitted shredder bag makes cleanup easier, but it also supports a more controlled disposal process because shredded material stays contained from the time the bin is emptied until it reaches final disposal. That matters in offices where loose fragments should not spill onto the floor, mix with other waste, or sit exposed during transport. A proper liner also makes it easier for staff to empty the machine without leaving residue in the cabinet. Buyers sometimes treat bags as a minor accessory, yet they affect both labor and handling quality every time the bin is changed. In busy offices, the right bag reduces mess, keeps the shredder area cleaner, and helps the disposal process stay more consistent from one bin change to the next.