  Stable baryonic Q-balls, which appear in supersymmetric extensions of the
Standard Model, could form at the end of cosmological inflation from
fragmentation of the Affleck-Dine condensate. They can be dark matter. The
existing bounds rely on the ability of Super-Kamiokande detector to trigger on
a slowly moving bright source, which may be difficult for techinical reasons.
We present a weaker but more robust bound based on the flux of neutrinos
produced by relic Q-balls interacting in Earth.
