Aspen Roto Clean is a carpet cleaning company. We clean just about everything. Tile & Grout, Upholstery, Leather... Most companies use a manually operated wand that is completely dependent on the strength and stamina of the operator. During a manual wand cleaning, you will get one maybe two cleaning passes per cleaning. We use the Rotovac power wand which has two counter-rotating cleaning heads featuring rotary jet extraction technology.