The cleaning of an LP jacket


I hadn't bought a used LP in a while, but did today. The LP itself is pretty clean, and will be even cleaner after it gets washed. But the cardboard jacket (cover) is a little nasty, more so than the ones I usually buy. What methods and products have all ya'll used to get them clean? With my normal not-so-dirty ones, I've always just set the jacket on the kitchen or dining room table and rubbed it with a folded paper towel. This cover looks like more drastic measures might be required to get the grime off.
128x128bdp24
 I would check the switch first do you have an ohmmeter ? First open the unit up and unplug it. Then turn the switch to on And check for continuity across three different terminations leading from the power in to the motor.  I say this because I had 16.5 And my switch failed which VPI can replace very cheaply. Although I did sell Mine and bought a new audio desk ultrasound. However the VPI is built like a tank and can last many many years it just may have to do some minor repairs along the way.
I doubt that theo's suggestion of an ohmmeter will help at all!  ;^)

I used a lightly dampened paper towel or gum eraser in the past.  But I like the prospect of slaw's suggestion much better.

Of course it may make a difference between glossy printed covers VS matt paper, the latter being more easily damaged by moisture.

One positive I can recommend is for removing price stickers and labels.  If you do any electronics work you may have a heat gun.  That can work wonders (with low setting) on even very old, dried out labels.  A plastic edged scraper can then make pealing away the label much easier.  A hair dryer might work but I expect has a lower heat range.

But another issue is signatures or notes made with a ball-point pen.  Years ago there was an ink eradicator easily available but no longer.  That may not have been much more than bleach?  Any suggestions for this problem would also be appreciated.
Unless they've really messed up the cover, I like previous owners' notes. I have some from the 60s with gift notes which are great.

When I started buying 45's as a 12 year old, I wrote my name on them all, so when we had dance parties I would know which were mine. Don't have them any more, but someone else may, and is wondering who I am ;-).

The UK type glossy jackets are not a problem---they can be cleaned with liquid. It's our U.S. paper ones that don't appreciate getting wet. I've used Bestine (found at art supply stores) for years to remove price sticker glue residue, which if applied very sparingly does no harm. Slaw, where did "the Sleeve City guy" make his recommendation, and what was it? What is the name brand? I agree, bacteria on LPs and their jackets is not something I care for!

@bdp24,

If you go to www.sleevecity.com he has several videos showing various things. The name brands I was referring to are Clorox or Lysol not the store brands. This website seems to not be working right, I'll have to look into it later.