How to wash thick wool? Also what to do with itchy wool?

Picked up a cardigan similar to this one. Very nice, mine is dark green and blue. Due to my troubles cleaning small wool scarves I feel like I need to take this one to the dry cleaners? I can imagine washing a thick wool cardigan would be difficult? Would this be a good idea? The cardigan I have is amazingly very form fitting for me and I fear hand washing will mess that up, even if it is very slightly...
Finally, I am having trouble with a particular scarf of mine. It is from the 70s and is 100 cashmere. I had it dry cleaned awhile ago and after I got it back it was itchy as heck. I hand washed it but it is still itchy... would pressing with an iron help at all? What should I do?? Thanks for any info on these situations!!

 

Wow.... Eucalan seems too good to be true! Sounds awesome. I have some questions: How's the cleansing properties of it, say an item is old and musty will it make it like new? I just soak and dry...? How long of a soak? How much do I use? Can I use it with a wool/silk blend? Safe on metal buttons (I assume it is)?

Thanks for the suggestion! Looks like exactly what I need.

 

I'm a fan of Eucalan, too. I've used it successfully on vintage cashmere sweaters, antique Kashmir shawls, heavy woolen hunting coats, etc.

 

Another fan of Eucalan here.