What a great question! I do some wearable art that is hand-beaded with sequins on denim.
My first question would be about stringing material. I always make sure my thread has been pre-shrunk and can get wet.
I also avoid beads with any kind of flash coating that can tarnish or wear off.
In my case, the items can be gently sink-washed with a little Ivory soap.
If the beads are loose, I would try swishing them in a little warm water with some mild dishwashing liquid and spread them out to dry on a tea towel, making sure the holes are oriented North to South.
Goo-Gone is amazing for anything gummy or sticky..it's a citrus based product.
I would want to test a few items first. You are smart to be conservative. I look forward to hearing from other readers about this topic!