A device for discharging a disinfecting solution to disinfect surfaces is configured to be arrangeable on a carrier surface and includes an exchangeable receptacle (39) for receipt of the disinfecting solution, a housing enclosing the receptacle, a spray head (30) configured to discharge disinfecting solution from the receptacle, and a pumping equipment for transporting disinfecting solution from the receptacle to the spray head and for discharging the disinfecting solution from the spray head. In another aspect, there is provided a spray including an inner nozzle part (50) and an outer nozzle part (51). The inner nozzle part includes a first channel for conducting disinfecting solution to a liquid outlet and a second channel for conducting pressurized air to an air outlet. The outer nozzle part includes a spray outlet and encloses the inner nozzle part to form a space between the air outlet und the spray outlet. The liquid outlet is arranged in the space to mix liquid, in particular disinfecting solution, ejecting out of the liquid outlet with pressurized air.

A device for administering fluid compositions includes a housing having a first end with an opening. The housing includes a compartment, proximate to the first end, that is capable of holding a liquid reservoir that is at least partially filled with a fluid. The device includes an air pump positioned within the housing, at a second end. The device includes an actuator positioned between the compartment and the air pump. The actuator includes an extendible piston that is configured to extend laterally toward the compartment. During device operation, the actuator causes the piston to extend towards the liquid reservoir and exert a force on the liquid reservoir. The force causes the fluid to be expelled from the liquid reservoir at the first end. The air pump is configured to atomize the fluid at the first end as it is expelled from the liquid reservoir.