It may well depend on hubs, but it takes me less than ten minutes to remove the wheel, the cassette, the cassette body, add grease (with a cotton ear bud thing), and put it back together.
If that's tedious, the entirety of my life is tedious. Have i been living a tedious life this whole time? Who am I? Is there a God?
I don't have great things to say about the hubs I've done that on, but I can say it's reduced the noise a lot. I used random bike grease.