"True" Oriental Rugs are most definitely the easiest to clean, IMHO, because in the large majority of situations, the colors will not run using HWE. (Careful with spotting agents however)
The cheaper, "imitation" oriental rugs are the ones to be cautious about colors running, etc....
Hope that the UK expert, Lord Ken Wainwright comments his experiences and offers advice.
Lord Wainwright, are you there sir?
The JAGUAR MX-2 ETM @ crossamericancorp.com