I don't expose my plants to chemical posions, like Pyrethium, nor do I care for Neem. Neem itself is an oil-based product, and oil itself clogs up the plant's ability to absorb light & nutrients via the leaves. Spider Mites are attracked to weak & sick plants, mostly caused by man-made cure-all chemicals. Foliar-feeding the plant every 10 to 14 days will cause the plant's cell structure to become so strong, spider mites can't bore into the plant's outter bark. This, of course helps to keep the limbs from breaking due to big, fat, juicy buds. When mixed with molasses, the health of the plant is amazing. There is a product called Bio-Wash that is well worth looking into. The Library at the dirtdoctor.com is the site to start with, not the salesmans snake oil pitch/advertizement.