Regular irradiation of indoor environments with ultraviolet C (UVC) light has\nbecome a regular task for many indoor settings as a result of COVID-19, but\ncurrent robotic systems attempting to automate it suffer from high costs and\ninefficient irradiation. In this paper, we propose a purpose-made inexpensive\nrobotic platform with off-the-shelf components and standard navigation software\nthat, with a novel algorithm for finding optimal irradiation locations,\naddresses both shortcomings to offer affordable and efficient solutions for UVC\nirradiation. We demonstrate in simulations the efficacy of the algorithm and\nshow a prototypical run of the autonomous integrated robotic system in an\nindoor environment. In our sample instances, our proposed algorithm reduces the\ntime needed by roughly 30\\% while it increases the coverage by a factor of 35\\%\n(when compared to the best possible placement of a static light).\n