Abstract: An evaporating device comprising: a container body, comprising a base, wall(s) and a neck, which further comprises a solution of an active composition; and a plurality of porous wicks wherein: at least part of each porous wick is inside the container; and at least part of each porous wick protrudes upwards from the container characterised in that: the base of the container comprises an upwardly projecting punt formed such that the lowermost part of each porous wick is always in contact with the solution of active composition during the lifetime of the device.