I use this string cleaner for about 4 years now, and being very satisfied with it. Previously i used Dunlop cleaner, that i found was not very good for me, because it provided more "lubricant" effect, not really cleaned the strings. This one, removes grim and dirt very efficiently, that was exactly i was looking for. I use Elixir polyweb strings and they just shine after usage of d'aAndrea cleaner. Yes, it has that "sticky" feeling that was described in a review above, but it's very individual i think, it depends what you like and what don't. For example i did't even notice that until i read about it in different reviews; and for these bucks great deal i think and what is more important that good cleaning effect doesn't mean that it will damage your instrument - I did't noticed anything (fading out or damaging freatboard) over continuous usage over years.