Not sure why the replies require the OP to answer what camera he's using. It doesn't matter what camera he's using does it? He can solve his own camera problems. All he's asking is how to keep camera domes clean. He could put a gopro or an iphone or a 360 camera in a camera dome in order to keep it water-sealed but still want to keep the dome clean of dust and dirt. Why the hell does camera specs matter? I don't have an answer but I thought the question was rather simple. If the size was the issue then people could have just asked, or else I thought accessibility would have been a bigger consideration. Haven't seen one helpful reply.