Carpets in homes and offices should be steam cleaned about twice a year. This provides a more thorough cleaning that general vacuuming.
Steam cleaning removes deep down grit in the carpet. This grit will cause wear to the carpet fibres as people walk on the floor. The carpet will prematurely age if this grit is not removed.
Steam cleaning also removes any allergens, pollen, dust mites and other contaminants that might be in the carpet. This greatly improves hygiene. Hygiene is especially important if there are young children on the floor.
Regular vacuuming does remove a lot of surface dirt and contaminants from carpet. But periodical steam cleaning is necessary for removing deep down issues at the very bottom of the carpet pile.
Steam cleaning will only expose the carpet to minimal moisture. The hot steam is only there for a few seconds, and then the carpet is dry. This steam cleaning method kills mites and removes contaminants without the use of any chemical solvents. It is environmentally safe and has no harmful health effects.
Regular commercial cleaning should include twice annual steam cleaning of all carpets.