A device that eliminates contaminants before they can be transmitted throughout a structure. The device may include a platform housing a disinfection source for selectively emitting UV-C light. The platform has a top. The top has two areas that pass the UV-C light with the remaining area of the top unable to pass the UV-C light. The two areas of the top are capable of supporting a person standing on the areas with a foot respectively on each area. The disinfection source is configured to emit the UV-C light when a person stands on the two areas, but not when there is no person standing on the two areas. The disinfection source may be removable from the platform for use in disinfecting objects.