I have two stand alone cd recorder/burners. The burner units you cannot take apart really...they are a fully enclosed unit. As far as cleaning the sensor eye in them....what do you recommend.....? Too hard to get in there with an alcohol swab. Heard some of those discs with the built-in brushes, especially the cheaper ones, aren't all that great and maybe some of the brush hairs will fly off and become lodged in there......... What do you do?