Originally Posted by PaperPrincess
I would not risk my washer! Try hand wasing small piece in a mesh bag and see how that goes. Sounds like an out door project to me. I don't think you want a lot of loose fibers going down your drain. Someone will probably have a better solution, though!
It is not so much the loose fibers but the lanolin. That can really clog up the plumbing. However, I know several people who do clean their fleeces in the house. If you do just a little a few times a year it probably isn't a big deal but if you do alot it can really build up.