Why does carpet and sofa need to be cleaned regularly?

Carpets or sofa/upholsteries are usually cleaned once every two years on average. So why the trouble of cleaning them on regular basis? Most common reason is because of visible dirts and usually its done by vacuuming. The second common reason is health, Vacuum cleaners will pick up dust, allergens and wastes from dust mites. This will help better air quality and thus relief asthma. The 3rd reason is odours, most commonly in sofas. Mostly are the results of spills, human sweat or oil, pets. These issues are usually hard to solve by households.

The most unseen issue is the soils and dirts trapped in the deeper fabers or carpet that vacumme cleaner can not remove. The soil will wear and tear the fibers over time and reduce its life span.

DIY Cleaning Methods:

Unzip the cushion covers from sofa and wash them is washing machine. Be careful some washing powders has bleaching properties and can change the cushion cover color.
Might be risky if you want to cleaning it yourself with rental cleaning machine, as the machine has limited suction and leave the sofa wet for a long time causing colour change or fabric to shrink. Trapped Remaining chemical will attract more dirt in the future.