This is the second one in less than a week. There are no signs of forced entry, nor is any part of the home left in a disarray (no more than the normal disarray that occurs with a 5 y/o & 2 y/o).
There are no clues as to the whereabouts, but we feel quite certain that a "person of interest" (mugshot below) may know the whereabouts.
Should we learn the whereabouts, our teeth will be happier... as will the parents of the 'person of interest' because then their fears shall be allayed in wondering if these tubes have been expelled in some remote part of the home only to be discovered dry and glue-caked into ... who knows what!?!