Question
What is the white powder that collects under a wool rug I purchased for my son's room a couple years ago?
no
Answer
The white dust is the deterioration of the glue that holds tufted rugs together.
Many times these wool rugs sit in the warehouse for a very long time prior to being purchased.
Tufted rugs are not meant to last forever and the glue will continue to dust until eventually releasing the fibers.