  We consider static spacetimes with no specific spacial symmetry where the
matter content consists of two charged dust species. This comes motivated by
the fact that static configurations are possible with one dust, but only if it
is electrically counterpoised dust. In order to have such dust, the quotient
between electric charge density and mass density needs to be fine-tuned to a
value that is far less than the charge-mass quotient for any known particle.
Here we prove that there are no static configurations with two dust species
unless each one is electrically counterpoised dust. This shows that
electrically counterpoised dust spacetimes can not be made with matter that has
on average the correct charge-mass ratio, but that the underlying particles
must have such ratio.
