Little-used areas with lots of active or messy use may need quick daily vacuuming. Dry soil from shoes, crumbs, etc. These methods will also remove dust from the carpet surface. Pet hairs should be removed promptly, as the oil in them makes them cling to carpet, and work down into the pile. Gritty soil tracked on carpet by shoes, wet or dry, will sink down in between fibers of carpet.
Gritty soil has very sharp edges capable of cutting carpet yarn fibers.
Vacuuming is the best means of removing the grit from deep in between the carpet fibers. Upright vacuum cleaners generally do the best job of removing deep seated gritty soil from carpets. Room size oriental rugs are best cleaned with an agitator type cleaner. When approaching a fringed edge with an upright cleaner, lift up the cleaner nozzle by pushing down on the handle. This will allow cleaning to the fringe, but will raise the nozzle and avoid catching the fringe.