Devices for application of agents to the cutting mechanism of paper shredders are disclosed. Maintenance and lubrication can be performed by applying lubrication agents to the cutting mechanism of a paper shredder without requiring disassembly of the paper shredder. The agents can also include scented agents and decomposing agents or a combination thereof. Lubrication sheets are disclosed for applying agents to the cutting mechanism of paper shredders. A holder is disclosed for retaining lubrication sheets within proximity of a paper shredder. Paper shredders are also disclosed having various means for identifying when lubrication is needed and/or when the cutting mechanism of the paper shredder is lubricated by a lubrication sheet. Paper shredders having a reservoir of lubricant for delivery to the cutting mechanism of the paper shredder are also disclosed. Such reservoirs may be removable. Cap designs allowing use of a removable reservoir with the paper shredders are also disclosed.