On the Indoor property of schools, daycare centers and school age childcare programs, The Massachusetts Pesticide Control Act allows the use of certain pesticide products which are referred to as "minimum risk 25b products". These 25b products are exempted from the standard pesticide registration process (and therefore carry no EPA Registration number under 40 CFR 152.25).
Note: Additional information about this list is available in PR Notice 2000-6 [PDF].
40 CFR ' 152.25(f) Minimum risk pesticides--
Products containing the following active ingredients are exempt from the requirements of FIFRA, alone or in combination with other substances listed in this paragraph, provided that all of the criteria of this section are met.
Castor oil (U.S.P. or equivalent)
Cinnamon and cinnamon oil
Citronella and Citronella oil
Cloves and clove oil
Corn gluten meal
Garlic and garlic oil
Mint and mint oil
Peppermint and peppermint oil
2-Phenethyl propionate (2-phenylethyl propionate)
Putrescent whole egg solids
Rosemary and rosemary oil
Sesame (includes ground sesame plant) and sesame oil
Sodium chloride (common salt)
Sodium lauryl sulfate
Thyme and thyme oil
Zinc metal strips (consisting solely of zinc metal and impurities)
A pesticide product exempt under paragraph (g)(1) of this section may only include inert ingredients listed in the most current List 4A. This list is updated periodically and is published in the Federal Register. The most current list may be obtained by writing to:
Registration Support Branch (4A Inerts List)
Registration Division (7505C)
Office of Pesticide Programs
Environmental Protection Agency
1200 Pennsylvania Avenue, NW
Washington, D.C. 20460
All of the following conditions must be met for products to be exempted under this section:
- Each product containing the substance must bear a label identifying the name and percentage (by weight) of each active ingredient and the name of each inert ingredient.
- The product must not bear claims either to control or mitigate microorganisms that pose a threat to human health, including but not limited to disease transmitting bacteria or viruses, or claims to control insects or rodents carrying specific diseases, including, but not limited to ticks that carry Lyme disease.
- The product must not include any false and misleading labeling statements, including those listed in 40 CFR 156.10(a)(5)(i) through (viii).
Duplicated from EPA's Biopesticide Regulation Tools.