I have seen a few tiny tiny bright red/orange spiders on several plants. I assume they are spider mites, but I can't find the point of attack. All leaves are clean of spots and marks and there is no evidence of webs anywhere. They just are walking around, but not doing anything to the plants... yet..

Do they only attack the leaves or can they attack the roots and thats why i cant find the damage?

Edited to add:

Nevermind, I found it is a beneficial predator mite P. Persimilis which eats the spiders mites.