A dispenser for dispensing volatile material by evaporation comprises a reservoir for containing volatile material to be dispensed. The dispenser further comprises a dispensing screen for dispensing volatile material by evaporation, the dispensing screen comprising a sheet of material having continuous first and second edges and forming a continuous loop of material extending between the first and second edges. Communicating means can carry volatile material from the reservoir to an in use upper edge of the dispensing screen. The material of the dispensing means is acutely angled to an in use vertical axis of the dispenser.
