Dirt containment requires effective barrier systems including exterior
sweeping and walk-off matting as essential first lines of defense in an
effective carpet maintenance system. Tracked-in soils present threats
to both carpeting and health. Some are allergens. Some are tacky and
attract more soils. And some are quite abrasive.
Debris that collects outside building entrances will find its way inside if
allowed to build up. Keeping all entrance areas swept is a simple and
easy way to reduce the soil load inside of buildings.
Oil on greasy parking lots adheres to shoe leather then transfers to
carpet pile, especially in high-traffic and shoe-pivot areas. Once
transferred, the gummy consistency collects additional soils. In
addition, asphalt residues tracked onto carpet create a
"yellowing/browning" condition that is difficult if not impossible to
remove especially on olefin carpet. Walk-off mats reduce these threats
and help keep carpet clean longer.
Grit a significant threat to carpet’s appearance over the long run coats
all external surfaces in great abundance. The reason is this substance;
a microscopic rock has many sharp, jagged, cutting edges. Tiny as it
is, it scratches, gouges, and grinds carpet pile yarn, especially under
body weight and shoe leather. Over time, when grit is tracked in, it
abrades pile yarn’s polished finish, causing carpeting to appear dull
and unattractive, and causing yarn damage that cleaning cannot repair.
Exterior sweeping and properly maintained walk-off mats will greatly
reduce the grit threat.