Hot Water Extraction or "Steam" Cleaning 
In this method, hot water cleaning solution is 
sprayed on the carpet and immediately extracted (along with the dissolved soil) 
by a wet vacuum. Extraction equipment can be portable or truck-mounted, the 
latter being more powerful in terms of spray pressure, heating capabilities and 
power of the vacuum pumps. Hot water extraction is often referred to as "steam" 
cleaning. In actuality this is a misnomer as the temperature of the heated 
solution never reaches the point to generate steam
Method 2 : 
Shampooing
In this process, the cleaning solution is 
showered onto the carpet through several openings in a circular brush. The 
rotary action of the brush whips the detergent into a foam and provides 
agitation or rubbing action on the carpet. This suspends the soil, and the 
wet/dry vacuuming that follows removes it. 
Method 3 : 
Dry (Absorbent Compound) Cleaning
In this process the cleaning agent, an absorbent 
dry compound (containing solvents and detergents) is sprinkled on the carpet and 
worked into the pile by a machine. It is vacuumed off after about half an hour, 
removing the soil suspended by the compound. 
 
 
