The Shark stain striker is a easy machine to use.You just put in the soap fill with water and add the oxy multiplier solution and start working the stain to remove. Scrub with the brush after you push the button for some solution and then it sucks up the dirt and stain is gone.Easy to clan out the dirty water. Used it in the truck seats worked great. The only thing is that as you spray stain remover it also sucks at the same time so you need to hold the scrub brush at an angle.