  Some part of the relic Dark Matter is distributed in small-scale clumps which
survived structure formation in inflation cosmological scenario. The
annihilation of DM inside these clumps is a strong source of stable charged
particles which can have a substantial density near the clump core. The
streaming of the annihilation products from the clump can enhance
irregularities in the galactic magnetic field. This can produce small scale
variations in diffusion coefficient affecting propagation of Cosmic Rays.
