What is the difference between contact and systemic insecticides?

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An insecticide destroys, suppress, stupefy, inhibit the feeding of, or prevent infestations or attacks by, an insect and the mode of actions that they work will either be by contact or systemic. Many pesticides are ‘contact’ pesticides. This means to be effective they must be absorbed through the external body surface of the insect. Other pesticides are systemic in action. Systemic pesticides can be moved (trans-located) from the site of application to another site within the plant where they retain a longer residual protection against insects. At TurfGator, we mix both modes of action contact & systemic for a highly effective treatment for controlling insects.

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