Size of the stain and how old it is. Might be better not to touch it in some cases. Majority of our blood treatments are too aggressive for wool rugs. May cause dye bleed and or yellowing. Probably want to clean at the customers risk.It’s wool
How’s a pic going to change your answer?
Thanks I'll try ituse cold water to flush the spot first. apply hydrogen peroxide to spot. watch it "bubble and disappear" rinse with cold water again.
If spot appears "brown/yellow" after the above steps---mists spot with Last Step ( an acid fiber rinse) to balance the ph and rinse again.
use "brown bottle 3% HP" if you are a novice.