Turntable Maintainance

How often do you clean or replace the drive belt.
My SME manual states to replace the belt at 1000 hours & prior to that, it should never need cleaning.

I used to clean my VPI TNT belts with alcohol AND subject them every six months or so to boiling water for between 30 seconds and a minute. This was at VPI's suggestion and the belts lasted a LONG time. Dave
I should have mentioned that I clean the belt every two weeks.
Now that i'm getting older the 25 lb. platter which must be removed for access to the belt is getting heavier.
I was thinking that I might clean less often and preserve my strength for playing the heavy vinyl LP's from the 1060's.
Thanks for your response
FWIW, a local modder who modified my vintage Thorens TD-166 MkII suggested I dust the belt with talc. As long as the excess talc is gently removed with a dry paper towel, he feels it will reduce the tendency of a rubber belt to stick, and thereby increase speed accuracy and belt life. Just my $0.02.