  We study 3d $\mathcal{N}=2$ SQCD with symplectic and orthogonal gauge groups
and adjoint matter. For $USp(2n)$ with two fundamentals and $SO(N)$ with one
vector these models have been recently shown to s-confine. Here we corroborate
the validity of this proposal by relating it to the confinement of $USp(2n)$
with four fundamentals and an antisymmetric tensor, using exact mathematical
results coming from the analysis of the partition function on the squashed
three-sphere. Our analysis allows us to conjecture new s-confining theories for
a higher number of fundamentals and vectors, in presence of linear monopole
superpotentials. We then prove the new dualities through a chain of adjoint
deconfinements and s-confining dualities.
