There are many carpet cleaning services out there. To find one that serves all your needs can be daunting. First you should look up services in your area. Decide what kind of cleaning you need. Next you should call and ask with method of cleaning they use. Dry cleaning or steam (hot water extraction). Use the method which you will fit your needs.
In the Wisconsin area there are a few like Sunshine cleaning company in oak creek or Oso cleaning in Riverfalls. Ask questions about what services you need and what they provide. Residential or commercial carpets have an impact on how they will approach treating the carpet.