This document presents a novel method for evaluating an automated dry fog disinfecting unit. The COVID-19 pandemic has increased interest in automation robots to conduct work in contaminated areas safely. The paper describes the design and development of a new affordable autonomous indoor sterilization robot that uses a wheeled mobile platform and hydrogen peroxide fogging device. A simulation analysis of the dry mist hydrogen peroxide sterilization model was conducted to study dispersal in an indoor environment. The efficacy of the created robot was tested in practical situations like hospitals, hotels, offices and laboratories, with positive results confirmed by an independent testing organization. The robot is aimed at autonomous indoor sanitization tasks to reduce human exposure to pathogens.