How often, and how, do you clean your stylus?

For the past few months, a DS Audio ST-50 when I feel like it, typically every 5 or 6 sides. Before that, a slice of Magic Eraser on a business card. If I can actually see anything on the stylus, I touch it first with the short- bristled Ortofon brush that came with my A90.

Humminguru s-duo. For the man with cojones. Never heard of it before now.

Inhale moderately, and BLOW!! Stylus is now clean.

Willyht +1

I use the stylus brush supplied with my Hana ML before every play. Every 5 records or so MoFi liquid cleaner recommended by my local dealer (Audio Advice). I also use a Humminguru ultrasonic cleaner for my records.