How to use Record Research Lab cartridge cleaner?

DON'T use the stiff brush at all. Throw it away. Use the soft brush in a back to front motion. It's all you need. I've used this cleaner for years with never problem.

-Wendell

I use the stiff brush routinely -- dry --as a stylus cleaner. Very useful. You do need to be gentle with it (and always back to front), but I've never damaged a stylus and it's much more effective than a soft brush.

On the other hand, I don't use the #9 cleaner much at all. :-)

I use the soft brush (built into cap) to drip a couple of drops of fluid to the stiff brush, never touch the soft brush to the stiff brush. That way I don't contaminate the fluid.
I use the stiff brush to clean the stylus. Just be gentle, and only brush back to front. I clean the stylus after every session. That way I know I am starting out with a clean stylus the next day.

A drop or two from the soft brush onto the hard one and then a couple of light back-to-front strokes is all that is needed every five sides or so. I agree with Smholl about cleaning at the end of the session too.