Hi guys,
we do a fair bit of commercial work and i came across a large lift entrance which had some pretty grim traffic lanes. the carpet was 80/20 wool/nylon and although most of the dirt did come out it wasnt pristine.
I used prespray gold, good agitation and then extract with hot fibre and fabric rinse at highish psi. it was all vacced properly beforehand.
I didnt want to use ultrapac because of the potential for texture change but i would be grateful for any other ideas.
thanks
dan