We have struggled with heavily soiled low profiles for years. They wick back every time with HWE. L/M is just skimming the surface clean in my opinion.
We now up-lift sections of carpet or tiles and take away for submersible cleaning. We re-fit carpet or tiles with good flooring adhesive and they look perfect every time.
Regards
Pete
The above is the only way I have found to get an even appearance on tile installations when the tiles have to be removed for work on the access flooring.
It is impossible to get good results when they are on the floor.
Pity the guys lifting them don't mark them and put them back in the right order.
I am lucky enough to have several cleaning systems a my disposal (almost, no texatherm had DF for a while) The one that gets the least use is the Dry Compound. We use the hardware now and again for agitation or pile setting but rarely with sponges/compound.
The best application for it IMO is entrance matting where you have considerable dry soil.
For us it isn't as cost effective as combination cleaning with other systems on large area installations.
Nice to have it if required though.