I do mine once a year. I pull them apart and inspect them. Then I use 1/2 swepco and 1/2 belray cv grease. I tried the Cat Desert Gold, it seemed to work good, but it was alittle thin and migrated out of the boots more.
Well, I just got back from the ER last night with a mild case of Pneumonia, I also have Bronchitis, and every other flu symptom. So, you guys be safe and take extra pics for me.