  Over an arbitrary field $\mathbb{F}$, Harbourne conjectured that $$I^{(N
(r-1)+1)} \subseteq I^r$$ for all $r>0$ and all homogeneous ideals $I$ in $S =
\mathbb{F} [\mathbb{P}^N] = \mathbb{F} [x_0, \ldots, x_N]$. The conjecture has
been disproven for select values of $N \ge 2$: first by Dumnicki, Szemberg, and
Tutaj-Gasi\'{n}ska in characteristic zero, and then by Harbourne and Seceleanu
in odd positive characteristic. However, the ideal containments above do hold
when, for instance, $I$ is a monomial ideal in $S$.
  As a sequel to (arXiv:1510.02993), we present criteria for containments of
type $I^{(N (r-1)+1)} \subseteq I^r$ for all $r>0$ and certain classes of
ideals $I$ in a prodigious class of normal rings. Of particular interest is a
result for monomial primes in tensor products of affine semigroup rings.
Indeed, we explain how to give effective multipliers $N$ in several cases
including: the $D$-th Veronese subring of any polynomial ring $\mathbb{F} [x_1,
\ldots, x_n]$ $(n \ge 1)$; and the extension ring $\mathbb{F} [x_1, \ldots,
x_n, z]/(z^D - x_1 \cdots x_n)$ of $\mathbb{F}[x_1, \ldots, x_n]$.
