Hi Lydia, hope this helps! https://www.thespruce.com/how-to-clean-a-wool-rug-4177780
Hire a profesional.
See If this helps . . .
if it is not installed and is just a rug, there must be a carpet cleaning place in your area. Much better to send it out than to do it at home.
Woolite but you might want to get a professional so it won’t shrink
this is a great article https://www.wikihow.com/Clean-a-Wool-Carpet