See this recommendation fom a tutorial in the Audacity 1.3 manual: http://manual.audacityteam.org/man/Sample_workflow_for_LP_digitization#Clean_the_LP
I usually just clean mine with the anti-static bristle brush (specifically bought for the purpose soem years ago when shops sold more TTs and all the attendant paraphenalia. I also have one of the little cylindrical velvet ones, Parostatik Disc Preener, which has a reservoir for distilled water to slightly moisten the velvet - but I find the fine bristle one works better.
I find that cleaning does not remove all the clicks and pops (it does get rid of the cat hairs though 
) - so after the initial capture I export a WAV file and process it throgh another piece of software called ClickRepair. It costs a little but is only a little shy of magicical in its effectiveness. See this sticky thread: https://forum.audacityteam.org/t/click-pop-removal-clickrepair-software/1933/1
WC