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If you’re trying to choose a gentler insecticide, the label is your best tool, but only if you know how to read it. This guide explains the federal “minimum risk” category, what an EPA registration number means, and why no legitimate pesticide label will ever tell you a product is “safe.”
Two kinds of products on the shelf
1. EPA-registered pesticides
Most insecticides, including many natural ones like spinosad, Bt and borax baits, are registered with the U.S. Environmental Protection Agency. You’ll see an “EPA Reg. No.” on the label. Registration means the EPA reviewed data on the product’s effects and approved the label directions.
2. “Minimum risk” (FIFRA 25(b)) products
Under section 25(b) of the federal pesticide law (FIFRA), certain products are exempt from EPA registration if they contain only active ingredients from an EPA list, such as cedar oil, cinnamon oil, citric acid, clove oil, peppermint oil, garlic, rosemary oil and others, and only approved inert ingredients, and meet labeling conditions. In November 2022 the EPA added chitosan to the list.
Key things to know about 25(b) products:
- The EPA does not review them for effectiveness. Results vary widely.
- Most states still require registration before they’re sold.
- They must list all ingredients, active and inert, on the label.
- “Minimum risk” refers to the ingredient list, not a promise that a product is harmless. Many 25(b) oils are hazardous to cats, for example (see our cat guide).
Why you won’t see “safe” on a real label
Federal rules (40 CFR 156.10) treat safety claims such as “safe,” “nonpoisonous,” “harmless” or “nontoxic to humans and pets” as false or misleading on pesticide labeling, even with “when used as directed” attached. If a bug product’s label or ads promise it’s “100% safe,” treat that as a red flag.
How to read a label, section by section
- Active ingredient(s) and percentage. This tells you what actually does the work. Look it up on the National Pesticide Information Center (npic.orst.edu), which has plain-language fact sheets.
- Signal word. “Caution” is the lowest toxicity category, then “Warning,” then “Danger.” Many lower-toxicity products carry “Caution” or no signal word.
- Precautionary statements. Hazards to people, pets, fish, bees and other wildlife. Read these first if you have pets or a pond.
- Directions for use. Which pests, which sites (indoor, outdoor, food plants), how much and how often. “The label is the law”: using a product contrary to its label is illegal.
- Re-entry and pre-harvest intervals. How long to stay out of treated areas and wait before harvesting food.
- Storage and disposal. Never pour leftovers down a drain.
A simple way to compare products
- Pick the product whose label lists your specific pest and site.
- Prefer targeted products such as baits, larvicides and spot treatments over broadcast sprays.
- Check precautions against your household: cats, fish tanks, bees in the garden, small kids.
- Use the smallest amount that works, and combine it with non-chemical steps like sealing, cleaning and removing water.
This article is general information, not legal or regulatory advice. Rules can change; check the EPA and your state pesticide agency for current requirements.