Not so much boring, but a real PITA is soaking items in acid bath to remove beerstone/oxalate. I use dairy milkstone remover and leave it in solution contact for about a week and it comes off easily, but if rushed, it is a real pain to try to scrub off the scale. I tend to rinse out several vessels with a 2 or 3 gallon diluted batch treated in succession and dump the used solution after the last one, so tying up the solution for a couple weeks or more is typical. I try to catch it very early on, but every once in a while I get a couple three vessels or items on which it has collected. This past weekend I noticed some on a Tilt hydrometer, so it will be next up on the regimen...but first I need to make sure that the housing is able to handle either a soak (a day or so at most) or a wipe down (which may be enough with a pass or two).