Ofer Kolton said:
Great if they have a wet vac.
Than have them lay a damp (slightly moist) towel on it.
bingo
Rather than dabbing with a towel to remove the excess, I'd suggest a "squeegee" method into the shop vac .
Any blunt tool will work as the squeegee
if it's still wet when you get there, it should only require LOTS of hot water flush/rinse extraction .
You shouldn't need any chems , just hot water.
if you run a TM, a little emulsifier (detergent) won't hurt either
repeat.."if" it's still wet when you get there, no need to dump chems on it ...
just
LOTS of flushing to get 100% of it out
..L.T.A.