biobrisk diluted in a spray bottle set on fine mist, lightly spray rooflining small areas at a time suck out with a wet vac

repeat as required, close windows turn engine on,heaters on full heat and full blast should be dry in 30 mins to an hour
nearly forgot!! add a cappfull of zoflora antibacterial to the spray solution, will stop any bacteria from breeding whilst its wet and will leave a nice smell when dry.