There are several ways to clean carpets; and they all have a specific application to your needs:
Hot water extraction: is used for the most thorough and deep down clean possible.
Other methods include: Dry compound; for areas which are used immediately. Dry foam; which is a low moisture system. Bonnet buffing is where an absorbent 'mop' is used to scrub your carpet clean. These are mainly maintenance cleaning methods.
We follow a 4 part procedure to clean your carpets:
1. Vacuum all areas and remove as much furniture as possible.
2. Pre-treat all heavily soiled areas: to loosen dirt and some stains.
3. Use appropriate method of  soil removal to thoroughly clean carpet.
4. Treat any stubborn stains,and use driers as necessary.