I'm dealing with spider mites for the first time right now and let me tell you it's HELL! I got them off of a clone from a friend and have since tried everything to get rid of them, nothing worked,

So here's what I have discovered does work, I've taken all of my plants in vegetation out side and mother nature works her magic, my plants outside are completely spidermite free, Meanwhile my vegetative room is staying empty and has since been clean until August when our outdoor flowering season begins,

Then I will be putting my "clean" vegetative plants in the two month empty "clean" vegetative room and moving all of my flowering plants outside to finish through mid october or so, meanwhile leaving my flowering room empty and cleaned for a few months,

I certainly hope this works and I'm confident it will, Spidermites are the devil and even though I acquired a purple kush clone, some rides are not worth the price of admission,

As for the eggs wintering over, i've never heard of that and will be vigilant upon inspections thanks for the tip!