There are 2 different types of fluorescent-tube style black lights. One is used for lighting up posters, and shielded to prevent humans from developing cataracts and wrinkles from UV exposure so that type is basically useless. There is no bulb sold for human usage that is going to give off any sort of UVB as laws in North America, most of Europe and most of Asia disallow UVB-emitting lights because of the potential for human harm.
The other type is the industrial-grade one that gives off UVC as well as UVA and UVB. It causes cell mutations, cancer and corneal damage and is not safe for any living thing. One of its primary uses is a sort of irradiation to kill off bacteria and molds and suchlike nasties.
The Zombie Mama is here!