Spider mites get their name because they produce a web like structure in their presence.
Treatment I would only recommend on plants that you donot intend to eat. You CAN apply pesticides to plants you around going to eat, but its upto you =P
Easiest method of treatment would probably be a pyrethium spray. DONOT use a regular household spray for cockroaches, flies, ants, ect. It does contain pyrethium, but its not specialized for plant usage.
Pyrethium sprays typically have two components. One is the actual pesticide which will kill the pest on contact. The other is a microfilm, which does just that, leaves a light film coating over everything that it touches, which chokes off the insects supply of oxygen and killing it.
Thing with spider mites is, any chemical methods of control/removal will NOT kill the insects eggs. You must carefully manage how you go about this, because you will need to make an application of the pesticide once, will kill off the adult and juvenile populations, but you must then about 4-6 days later make another reapplication in order to kill off the insects that have hatched from the eggs after the pesticide has become inert.
Remember that, using chemical to control weeds,insects, ect, pests in general, are LAST RESORT MEASURES. However, due to advertising and easy availability, everyone believe that it is the first thing that you do.
There are specific natural control measures for certain insects that you should attempt first. One can be, finding another plant that will help deter them from the area, and placing that plant near the target plant. Another could be using a predatory insect to get rid of them. A good one is the lady bird beetle, they eat aphid up like candy, not sure how they go with spider mites, but they should do the trick. Ofcourse the problem there being, lady beetles will eventually move on =\
Hope any of this information helps. I try to use my memory and not to resort to any resources for my information, so I cannot guarantee accuracy =D
P e a c e.