I clean every record before each play on a Loricraft. Most of my records have been cleaned dozens of times. But I am not anal about cleaning fluids etc. Any decent one will do. You only have to observe the dust in the air in your audio room as revealed by sunlight coming through the window to realize that any record exposed for more than a few minutes in a room will have debris on it so there is no point in going crazy.
Do you clean your records before play, after play, or once (and then never again)?
All my records have been cleaned at least once, but after play, I'll drop it in my Klaudio ultrasonic cleaner for a quick re-clean. I figure if my stylus is digging / loosening anything in the grooves, it's a good opportunity to get that junk out of there. How about you?