The only viable usage for Sandshrew is with Drilbur. Sandshrew weakens Drilbur's counters enough for Drilbur to sweep. The probem is that you lack support, so anything like Choice Scarf Snover or Choice Scarf Porygon will absolutely rip through your team. It also makes you much more dependent on getting and keeping sand up.
Also, please please please get these threads approved.
"Mienfoo is a shitty Pokemon."