If you clean your battery cables, contrary to belief, you should have lead to lead or lead to cable end direct connection.  This means that you should not disrupt current flow with dielectric grease or some other substance.  I'm not saying not to use grease.  Clean the connections and when the cables are connected, cover them with dielectric grease.  This will prevent any corrosion from building up on your cable ends.  If done properly, your connections will never need to be cleaned again.