main thing to consider when cleaning the pivots is to 1st flush any water out - i use gt85, its like wdd40, only it leaves behind a coating of teflon.
every few months i also do a full rebuild of the bike anyways, for a general clean inspection and lube.
what bike have you bought ? if it has a full compliment of sealed cartridge bearings you dont really have to grease anything - just keep the thing clean.