Do you clean your records before play, after play, or once (and then never again)?

I'm doing the same as Pops…. 16.5, right down to the Magic Eraser, Onzow, and dry brush. I use Audio Intelligent fluids. When lazy or the LP is pretty nice, I use the 1 step # 6. Sometimes I do the 2 step process, with # 15, and distilled water. When I use the #15, I use a designated VPI wand to vacuum the #15. Talk about coincidence, it was Basis that ruined digital for me. I could never go back. I play my Cd's in the car (-: 

Mapman, Okki Nokki machine is only $500, with Audio Intelligent three step fluids it gives excellent results.
I clean every 10-15 plays without thinking about it. Stylus is cleaned before playing each side. It’s annoying but there is no way around it.
Yes, some old records require multiple cleanings with prolonged soaking. New records are dirty as hell too.

Forgot to mention: now that I have Next-Gen Sequencing in my lab, I am using 18MOhm water as the last step on VPI 16.5. $200k of business investment paid off for my true calling!!! ;-)

okki nokki...not bad!

And three Disc Doctor brushes, one for each solution. Double rinsing with pure water step three. I only have a few hundred records, and even in this case it is very inexpensive. I've had the Okki Nokki for a year now and it's been reliable.