Have I got this right? Whats the best way to use UM?
you mix up the UM and put it in the solution tank and prespray with the wand or hand tool - agitate - the rinse with the same stuff from the tank.
Or just rinse from the wand without prespraying the carpet.
Or use as a prespray from a sprayer as you would with other conventional presprays.
I would get yourself a spray lance ... a wand is a crude sprayer and the jets are too small .
For speed on fairly dirty carpet ...
I mix UM and a dash of citrus pre-spray in a bucket ( sometimes i add a dash of butyl glycol ) ... add about four liters or so of warm water and put it into the machine tank , spray through the inline heater with the lance at about 200psi ... get it as wet as u get get away with .
Hit it with the rotary and a red floor pad ... (i use a green on a carpet with embedded fluff or pet hair) , makes a CRB look like its tickling the carpet .
Fill your water tank with a couple of buckets , there is probably enough UM left down there when diluted ... but hell , shake a bit more in .
Extract hot using inline heater .
There is little to touch this for speed /result , using a portable .