I have over 10 pots with winter pansies in them outside. Some have beasties on them I think they are mites as I googled them. I don't know what to do. Should I bin them? The ones without beasties have terrible black spots on the leaves. I've cut all the spotty leaves off. Is there any hope for them? Some of the plants are summer pansys/violas from last May 
I took a picture.