Hi
I did my parents' wool carpet with multi pro/ff rinse. All came up lovely except the areas in front of the two armchairs where there were blacker, more heavily soiled patches of a couple of feet square. I expect those of you with experience must see this quite a bit

I'm going back round tomorrow for another go at these areas, so I'm wondering:
1. Same again
2. Traffic clean / ff rinse
3. Something from the prochem spotting kit
4. Matricide

Any thoughts?
Thanks
Owen