Before steam cleaning, the vacuuming of the carpet is necessary. So, in order to use SteamVac, remove the SteamVac reservoir tank along with the unscrewing of the filler cap. Then reattach the SteamVac reservoir and plugin the SteamVac Power Cord. Then you have to squeeze the trigger to spray the cleaning solution on the surface of the carpet, and move it forward and reverse unless the stain is over.