Abstract: An autonomous or semi-autonomous cleaning device having a disinfection module mounted therein for disinfecting walls and objects in the areas it operates. The disinfection module consists of a fan, atomizer nozzle, an electrostatic module and a disinfection tank to store disinfection solution. The nozzle of the disinfection module will spray a stream of disinfection solution towards walls and objects to disinfect these surfaces. The system activates an electrostatically charged disinfection misting system which is designed to disinfect vertical surfaces and select horizontal surfaces.