Sierra Natural Science 217 Spider Mite Control Ready-to-Use, 4 Ounces and Cutters or a couple of them

or a couple of them

Small amounts of micro-particles are occasionally visible in some conditions but will not affect mineral balance or system compatibility

Foliar Spray: Mix 1oz

so you don't have to discard the entire pen when the probe reaches its end of life

Sierra Natural Science 217 Spider Mite Control Ready-to-Use, 4 Ounces and Cutters or a couple of themSierra Natural Science 217C Spider Mite Control Ready to Use kills spider mites, broad mites, russet mites and their eggs. How our Spider Mite Control works Spider mites destroy plant cells by sucking out their contents and 217C unique formula works by providing a barrier which is harmless to the plant, but fatal to the mites. 217C kills the spider mites eggs and kills the life cycle by coating the eggs with an oily shield that blocks respiration to