  We study the fully-strange tetraquark states with the exotic quantum numbers
$J^{PC} = 0^{+-}$ and $2^{+-}$. We construct their corresponding
diquark-antidiquark interpolating currents, and apply the QCD sum rule method
to calculate both their diagonal and off-diagonal correlation functions. The
obtained results are used to construct some mixing currents that are nearly
non-correlated, from which we extract the masses of the lowest-lying states to
be $M_{0^{+-}} = 2.45^{+0.33}_{-0.44}$ GeV and $M_{2^{+-}} =
3.07^{+0.25}_{-0.33}$ GeV. We apply the Fierz rearrangement to transform the
diquark-antidiquark currents to be the combinations of meson-meson currents,
and the obtained Fierz identities indicate that these two states may be
searched for in the $P$-wave $\phi(1020) f_0(1710)/\phi(1020) f_2^\prime(1525)
(\to \phi K \bar K / \phi \pi \pi)$ channels.
