SM-90 treats both insect and fungal infestations. May be used to treat roots diseases, molds, mildew and leaf spot. Applied directly to foliage, SM-90 discourages and eliminates many commoin pests, including aphids, thrips, spider mites and whiteflies. Also increases plant transpiration and metabolism and accelerates growth. SM-90, the “SM” is for Spider Mites - kills Spider Mites dead! One Liter Bottle Concentrate.