Very good cleaning spray for removing dust in electronic parts that are difficult to access. Do not use in connected devices. After use about 1 hour act (Spritz leave) leave. Use was trimming potentiometer the volume control on the stereo system, the Absnken or increase the volume crackled loudly in the speakers. After using the spray everything Roger! The price is at an appropriate level, as good times now has its price. I paid about 11 Euro incl. Shipping costs for 400 ml. That's OK full purchase recommendation !!!