WASH and DRY these rugs FIRST!  Do NOT use right out of the package.  After washing in cold water on gentle cycle, the rugs looked as if they had molted!  There was a great deal of 'rug fiber/fuzz' in the washer; it actually looked as if the rugs had come apart, BUT after 3 short cycles in the dryer (cleaning out the lint trap after each time), they came out fine.