Comment on "Searching for Topological Defect Dark Matter via
  Nongravitational Signatures"
  In the letter by Stadnik and Flambaum [Phys. Rev. Lett. 113, 151301 (2014)]
it is claimed that topological defects passing through pulsars could be
responsible for the observed pulsar glitches. Here, we show that, independently
of the detailed network dynamics and defect dimensionality, such proposal is
faced with serious difficulties.
