There is also a vacuum cleaning device for cleaning the grooves of vinyls. They are fairly expensive; but some record shops have them and will clean a record for a fee. (A friend of mine just popped US$1000 and bought one. He is very happy with it.

If mechanical cleaning like Mountain Thyme suggest or with a vacuum cleaner work, I think the results will be much better than you will get from filtering which has to filter out some of the good stuff too.

Murray