i cleaned a very thick pile wool carpet in an indian restaurant today and despite using enzyme presray and formula 90 in the tank the carpet, although much much better is still a bit greasy. this has not been an issue as the owner is qiute realistic but i would like to remove all of it next time and also use milder chemicals i was anxious to do an impressive job(which i have) any thoughts on an alternative approach. the waste water was absolutely black with jelly at the bottom?yuk. it is a very high quality woven carpet. my understanding is 1 high ph (saponification) 2 enzymes turn it to gelatin 3 solvent will dissolve it. enzyme prespray is high ph with enzymes(obviously) formula 90 is high ph temp 70 degrees. the only thing is i was agitating with a pile brush.
many thanx