Spider Mites are about the size of a trichome head and very hard see without a microscope. If you have an infestation, youll find webbing on your plant(s). Ive been fighting spider mites for nearly a year now. Ive emptied out my flower room for a while just allowing everything to die off and i can get in there and really clean and disinfect. My veg room i am treating with Neem.
Here is a spider mite

