A waste storage device is provided comprising a waste storage compartment for storing waste and a lid. The device further comprises a dispenser for dispensing an agent inside the waste storage device and an actuator arranged to activate the dispenser. A waste cartridge is also provided comprising a relatively rigid upper portion and a relatively flexible lower portion. The relatively flexible lower portion is arranged for storing waste items and the relatively rigid upper portion is arranged to be folded about an axis in a direction substantially towards the relatively flexible lower portion of the waste cartridge.