SNS 209 Systemic Pest Control Concentrate, 2.5 oz It provides a barrier for plants to protect them against damaging insects The SNS-209 barrier is harmless to the plant but distasteful to mites and other insects. This Systemic Insect Control is made up of 100% pure botanical extracts that are highly water soluble. The botanical extracts are all food grade GRAS (generally recognized as safe) materials. SNS-209 Systemic Insect Control is exempt from EPA registration under minimum risk pesticide exempted under FIFRA section 25(b).