Mass. Gen. Laws ch. 132B § 6A
No person shall use a registered pesticide in a manner that is inconsistent with its labeling or other restrictions imposed by the department. No person shall use a pesticide which is the subject of an experimental use permit inconsistently with the terms and conditions of said permit.
No individual certified, licensed or permitted as a pesticide applicator shall violate any provision, condition, term or restriction of his certification, license or permit.
No person shall use a pesticide that has been classified by the department as being for restricted use unless he is an appropriately certified private applicator, an appropriately certified commercial applicator, or a competent individual acting under the direct supervision of an appropriately certified applicator.
Mass. Gen. Laws ch. 132B, § 6A