Mass. Gen. Laws ch. 132B, § 6H
(b) The department or appropriate municipal board of health or agent or director of public health shall determine if such a waiver is warranted based on the following criteria:
(2) whether no viable alternatives to the use of chemical pesticides exist.
As a condition of approval, the appropriate municipal board of health or agent or director of public health or the department shall require a commitment from the school official or operator of a child care center or school age child care program that the underlying causes of the pest outbreak will be identified and addressed in order to prevent future outbreaks.