  We study sensitivity of low-energy experiments to the scale of supersymmetry
breaking $\sqrt{F}$ in models with light sgoldstinos --- superpartners of
goldstino. The limits on $\sqrt{F}$ may be obtained from direct and indirect
measurements of sgoldstino coupling to photons, leptons, mesons and nucleons.
There are three sources of constraints: ($i$) astrophysics and cosmology;
($ii$) precision laboratory experiments at low energies; ($iii$) rare decays.
We discuss only processes with real sgoldstinos. For sgoldstino lighter than a
few MeV and superpartner masses of the order of electroweak scale,
astrophysical and reactor bounds on $\sqrt{F}$ are significantly stronger than
limits which may be reached at future colliders. In models with heavier
sgoldstino (up to 5 GeV), constraints from flavor conserving decays of mesons
are complementary to ones coming from collider experiments. The most sensitive
probes of sgoldstinos are flavor violating processes, provided that flavor is
violated in squark and/or slepton sector. It is shown that sgoldstino
contributions into FCNC and lepton flavor violation are strong enough to probe
the supersymmetry breaking scale up to $\sqrt{F}\sim10^7$ GeV, if off-diagonal
entries in squark (slepton) mass matrices are close to the current limits in
MSSM.
