  We study how gravitational focusing (GF) of dark matter by the Sun affects
the annual and biannual modulation of the expected signal in non-directional
direct dark matter searches, in the presence of dark matter substructure in the
local dark halo. We consider the Sagittarius stream and a possible dark disk,
and show that GF suppresses some, but not all, of the distinguishing features
that would characterize substructure of the dark halo were GF neglected.
