Sap on Phal Leaf -- Mites?

[vlhart]

Me again. New day, new problem.

I've got what I thought was a very healthy Phal that has been busy growing 3 new leaves and tons of roots. But yesterday I noticed little droplets of sticky sap on the underside of the leaves. When I moved the leaf to see better, the leaf bruised where I gently bent it.

Looking into the base of the leaves I see a few small white bugs moving around, hardly visible to the eye. No webs I can see so I'm not thinking spider mites, but is it possibly the Phal mite?

From what I've read, wiping the leaves with alcohol regularly is a way to contain this issue. But what have you guys tried that works?

Pictures here of the leaves: