A kit for converting a battery-powered fragrance sprayer of the type described into a solar powered automatic fragrance sprayer for use in an indoor lit area, comprising: a battery pack (24) for fitting into a battery compartment (28) of the fragrance sprayer, the battery pack (24) including a rechargeable nickel-hydride (Ni—Mh) low self-discharge (LSD) battery (30) mounted within a battery casing having positive and negative connection areas (26, 34) at the respective ends for connection with connectors in the battery compartment (28)； a replacement outer casing (12) for the fragrance sprayer； at least one tuned amorphous silicon solar panel (14, 16) or at least one dye sensitised solar cell panel (14,16) disposed on the replacement outer casing (12)； and cable connection means (32) electrically connecting the at least one tuned amorphous silicon solar panel (14,16) or the at least one dye sensitised solar cell panel (14,16) to the Ni-Mh LSD battery (30) in the battery pack (24).
