Well I did the job yestetday, some stains csme out with f90 pre spray once agitated.
After a rinse and extract I found a couple of black spots and a couple of orange patches hadnt come out.
Tried stain exit first, no good, rinsed out then tried liquagel, this faded the orange stain but didnt remove it totally, rinsed again and. tried ink exit, no good, another rinse and. tried white spirit and it did nothing on any of the remaining stains, so did one final rinse and left at that. I did explain to the customer when I did the survey, that some marks may not come out totally and wrote on the survry form that this had been mentioned. After completion, I showed it to her husband, who I know personally and he said it lookrd a million times better and he hadn't expected all the marks to come out.
Prior to cleaning the marks were totally obvious and hit you in the face as soon as you walked in the room, afterwards if you scrutinised the carpet you would see the remnants of stains, so a good result really.