PROBLEM: Crushing -- the loss of pile thickness due to foot traffic
SOLUTION: To reduce crushing, vacuum carpet frequently. Crushing is not considered a manufacturing defect unless specifically mentioned in the manufacturer’s warranty.

PROBLEM: Matting -- the unwinding of yarn and intermingling of the yarn as a result of foot traffic
SOLUTION: Matting may be caused by improperly specified cushion, cushion failure, or improper maintenance. Matting is not considered a manufacturing defect unless specifically mentioned in the manufacturer’s warranty.

PROBLEM: Shading or Pile Reversal – appearing darker in color in one direction and lighter from another direction or angle; also known as watermarking and/or pooling
SOLUTION: Shading is a change in pile direction, or pile reversal -- not a change in color. Its cause is unknown, is usually permanent, and has no known solution.

PROBLEM: Sprouting – yarn tufts rising above the pile surface
SOLUTION: Carefully snip with scissors so that the tuft(s) is level with the others. Do not pull them out by hand.

PROBLEM: Yellowing – can be caused by pollutants from heating fuels, changes in alkalinity, cleaning solutions, and atmospheric and environmental contaminants, and/or use of an alkaline detergent solution
SOLUTION: White vinegar (acetic acid), citrus acid, or tartaric acid solutions can help reverse the effects (SEE STAIN REMOVAL GUIDE FOR RECOMMENDED SOLUTION.) It is important to note that some carpet yellowing may not be removable, however.