the spray is really easy to use and works very fast. Spraying, leave on short and clean brush with cloth. it's that simple.
I have an older car (10 years), so the difference was quite extreme !. Has summarizes everything cleaned from the cushions.
One point deduction because it has not stopped cleaned everything (or at least the spots "bright" made so that they are less visible).
PS The cleaned-fragrance's after cleaning for a few weeks in the car :)