Attack of the Spider Mites

All three of my mint plants are infested with spider mites. Surprisingly, they don't seem to have spread to the other plants, but they LOVE the mint plants. Armed with some scotch tape, I tried a one-on-one attack this evening. They stick to the tape like a charm, but even with reasonably small plants it turned pretty time-consuming. I'm certain I didn't manage to spot them all either. The little green ones blend right into the leaves and hide in the crooks of the stem. I really don't want to use a commercial bug spray, so I'm remaining optimistic that I can tamp down the infestation by hand, at least on the mint julep. The other mint plant I think might be too far gone and the chocolate mint is such a mess they're hard to spot.