SNS 209 Systemic Pest Control - conc - 5 galSNS 209 Systemic Pest Control approaches the problem of insect pest control by working within the plant itself. This unique organic formula contains rosemeric acid, a derivative of the rosemary plant, that the plant will uptake and spread throughout its vascular system. The presence of rosemeric acid in the plant cells forms a barrier that insects find distasteful. Once a feeding insect comes in contact with the rosemeric acid, they retreat and look