Professional carpet cleaning should be performed 1-2 times a year for the normal home. Frequency of cleaning can be dependant upon the amount of traffic the carpet receives on average. Consult a Grimefighters, inc. technician for a recommendation following the inspection of your carpets. The same rule of thumb applies to upholstery and tile as well. Remember the best method to keeping your flooring or upholstery in great condition is to maintain it regularly with dry vacuuming of carpet and mopping of tile floors in between professional cleanings.