I have purchased many Haflinger slippers over the years.  The reason for the 2 star review was that one of the slippers came with several dead moths on it that had dried out and gotten moth flakes/powder on one of the slippers.  As we all know, moth larvae eat  wool.  The larvae are small and hard to see.  The slippers didn't appear to have been eaten, although I can't see the inside of the slipper.  Only time will tell if there are/were larvae on the slippers.  I just brushed the slipper with a soft bristle brush and will hope for the best.