  We present a new search for weakly interacting massive particles utilizing
ten years of public IceCube data, setting more stringent bounds than previous
IceCube analysis on massive dark matter to neutrino annihilation. We also
predict the future potential of the new neutrino observatory, P-ONE, showing
that it may even exceed the sensitivities of gamma-ray searches by about 1-2
orders of magnitude in 1-10 TeV regions. This analysis considers the diffuse
dark matter self-annihilation to neutrinos via direct and indirect channels,
from the galactic dark matter halo and extra-galactic sources. We also predict
that P-ONE will be capable of pushing these bounds further than IceCube, even
reaching the thermal relic abundance utilizing a galactic center search for
extended run-time.
