I also have a bottle of AT fluid, and the suggestion of no more than once a month makes sense to me, but I don’t know what Audio-Technica recommends. I can tell you that my nude elliptical has only been cleaned with the AT fluid a couple of times, and those were only because I felt like it should be done occasionally. Maybe I just have very clean records, but I don’t really notice this thing picking up nearly as much stuff as my conical does. As in, virtually none. I would imagine the nude-mounted ML stylus is similar in this regard? I’ll lightly dry brush it once in a while just to be sure, but it seems like if this baby encounteres a speck of dust, it gets around it rather than taking it along for the ride.