Bottles of “natural” ant, mosquito or flea spray on US shelves often have no EPA registration number, while conventional pesticides do. That is not an oversight. The US Environmental Protection Agency (EPA) exempts a category it calls “minimum risk pesticides” from registration under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). This article summarises three EPA pages on the exemption: “Minimum Risk Pesticide: Definition and Product Confirmation” (last updated 8 April 2026), “Conditions for Minimum Risk Pesticides” and “State Regulation of Minimum Risk Pesticides” (last updated 23 September 2026), plus EPA’s enforcement page. It covers the United States only, and it is general information. EPA’s own pages note that they give guidance to manufacturers and distributors and do not create binding requirements.
What the exemption is
EPA says certain minimum risk pesticides pose little to no risk to human health or the environment, so it has exempted them from the requirement to register under FIFRA. The exemption is in 40 CFR 152.25(f). EPA says it began exempting such products in 1996 to reduce cost and regulatory burden for businesses and the public for pesticides posing little or no risk, and to focus its resources on pesticides that pose greater risk. The exemption covers products meant to control pests such as mosquitoes, ticks, rats and mice as well as products used in agriculture.
The six conditions
EPA lists six conditions that a product must meet to qualify:
- Active ingredients: only those listed in 40 CFR 152.25(f)(1).
- Inert ingredients: only those EPA has classified as eligible, meaning ingredients listed in 40 CFR 152.25(f)(2), commonly consumed food commodities, animal feed items, edible fats and oils, and certain chemical substances listed under 40 CFR 180.950(e).
- Label listing: all active and inert ingredients must appear on the label, with active ingredients by label display name and percentage by weight.
- No health-related claims: the product must not bear claims to control or mitigate organisms that pose a threat to human health, or insects or rodents carrying specific diseases.
- Company details: the producer’s name and contact information must be displayed prominently.
- No false or misleading statements on the label.
A product that meets all six conditions does not need to be registered with EPA. If it fails any of them, EPA says it is not exempt and its sale or distribution without registration may violate FIFRA unless another exemption applies.
What labels may and may not say
The health-claim condition shapes what a shopper will see. EPA says minimum risk labels may not link a pest to a specific disease. It gives examples: a label may not say it “controls ticks that carry Lyme disease”, but may say it “controls ticks”; it may not say it controls mosquitoes that can transmit malaria, encephalitis, West Nile virus or Zika virus, but may say it “controls mosquitoes”. Labels also may not claim to control microorganisms that threaten human health, so terms such as “sterilize”, “disinfect”, “sanitize” or “kill germs” are outside the exemption, as are claims to “prevent infection” or “stop the spread of germs and disease”. For a shopper, a bottle that makes any of these claims and carries no EPA registration number is a mismatch with the exemption as EPA describes it.
What EPA does not do
EPA says it generally does not review products that claim to meet the exemption, and it does not provide label review. The producer is responsible for reading the criteria and judging whether the product meets them. That means the absence of a registration number, and the presence of a “minimum risk” description, reflect the producer’s own evaluation of the criteria rather than an EPA approval of that specific product.
States can still require registration
EPA states that a product exempt federally may still require registration under state law. It explains that each state has its own statutes and regulations on pesticide registration, sales and use, and that states are not required to permit the sale of a product simply because it is exempt under FIFRA. Questions on state rules are best directed to the state pesticide regulator. So a product on sale in one state may face different requirements in another.
Enforcement
EPA says that if a product does not meet all the requirements and is sold anyway, it must be registered unless another exemption applies, and that EPA may issue notices of warning, stop sale, use or removal orders, and assess civil or criminal penalties. States also monitor the market, may take their own enforcement action and may refer misleading product claims to the Federal Trade Commission.
Common questions
Does “minimum risk” mean a product is harmless?
EPA says it has determined that such products pose little to no risk to human health or the environment when they meet the exemption criteria. The label and manufacturer’s directions still apply.
Where do registered products fit?
Registered products carry an EPA registration number and follow a different path, described in the site’s guide to reading a US pesticide label.
The bottom line
EPA exempts minimum risk pesticides from federal registration if they meet six conditions on ingredients, labelling and claims, and it does not review individual products. States can still require registration. For a US household, an unregistered spray with no health claims and a full ingredient list fits the exemption on its face, while one promising to kill disease-carrying insects or germs does not. Anyone comparing DIY products with a quote from a professional should check the label first.
Sources
- US EPA, “Minimum Risk Pesticide: Definition and Product Confirmation” (epa.gov)
- US EPA, “Conditions for Minimum Risk Pesticides” (epa.gov)
- US EPA, “State Regulation of Minimum Risk Pesticides” (epa.gov)
- US EPA, “Enforcement Related to Minimum Risk Pesticides” (epa.gov)