Hey farm gals, it’s Kara from Lange Girl Farms!
I started the morning giving the pregnant mini mare some quiet time on fresh pasture while I hand-weeded near the herbs and torched a couple of early weed patches along the fence. The Siberian huskies were racing around in their own safe space, the llamas and alpacas kept their steady watch, and the chickens and ducks stayed busy in their secure run. These chemical-free mornings remind me why we work so hard to keep our land and animals completely free of nerve toxins like organophosphates and chlorpyrifos.
In Part 4 we looked at how these residues end up in our food. Now in Part 5 we’re following the money: who makes organophosphates, how the lawsuits have unfolded, and why regulatory battles have been so long and contentious. Chlorpyrifos, in particular, has been at the center of some of the fiercest fights between EPA scientists, industry, and public health advocates.
The Manufacturers
The main producers and historical suppliers of chlorpyrifos and other organophosphates include:
• Dow Chemical (now part of Corteva Agriscience): The original developer and longtime champion of chlorpyrifos (Lorsban). They fought hard to keep it on the market.
• Bayer and other generics: Multiple companies produce generic formulations, keeping prices low and supply high for conventional growers.
• Other organophosphates: Companies like Syngenta, FMC, and various generic manufacturers supply malathion, diazinon, and related compounds.
These chemicals have been profitable for decades because they are cheap, effective broad-spectrum insecticides. Industry groups have consistently argued that the economic benefits to agriculture outweigh the risks when “used as directed.”
Lawsuits & Legal Pressure
Organophosphates have generated significant litigation:
• Farmworker and applicator cases: Lawsuits alleging acute poisoning, long-term neurological damage, and failure to warn about risks.
• Community and water contamination suits: Cases involving drift, runoff, and contaminated wells, especially in agricultural regions.
• Major EPA challenges: Environmental and health groups (including Earthjustice and the Natural Resources Defense Council) sued the EPA multiple times to force stronger action on chlorpyrifos. In 2021, the EPA announced plans to ban food uses of chlorpyrifos, only for the decision to face court challenges and partial reversals. As of 2026, some agricultural uses remain under review or limited restrictions, but full elimination has been blocked or delayed.
The legal battles continue, with ongoing pressure from beekeepers, pediatric health organizations, and farmworker advocates.
Regulatory Battles: EPA vs. Science & Public Pressure
The EPA has reviewed organophosphates repeatedly:
• Residential uses of chlorpyrifos were banned in 2000 due to risks to children.
• Agricultural uses faced tighter restrictions over the years, with buffer zones and application limits added.
• In 2021 the EPA moved to revoke all food tolerances for chlorpyrifos, citing unacceptable neurodevelopmental risks — a decision celebrated by health advocates but immediately challenged by industry.
• Court rulings have gone back and forth, leading to a patchwork of state-level bans and federal delays. Some states (California, New York, Hawaii, etc.) have enacted stronger restrictions or full bans, while many Midwest agricultural states still allow limited uses.
Critics argue the EPA has been too influenced by industry data and economic arguments, while the agency maintains it balances risk with the need for pest control in major crops.
Why This Matters for Regenerative Homesteads Like Ours
We don’t buy the “safe when used as directed” line when drift, runoff, and persistent residues are documented realities. Our pregnant mini mare gets only clean pasture because neurological and developmental risks are too high for livestock. Our huskies, llamas, alpacas, chickens, and ducks live without the nervous system burden these toxins carry.
The money trail shows the familiar pattern: profitable chemicals stay on the market longer than the science supports, while small farms and families deal with the cleanup. That’s exactly why we hand-weed, torch, mulch, and build soil the natural way — no drift, no hidden residues, no legal or health battles.
Series Roadmap – What’s Coming Next
Part 6: The roots – discovery, military origins of organophosphates, and the shift to agricultural use.
Part 7: Reclaiming our land – our exact holistic methods (hand-weeding, torch burning, mulch, cover crops, livestock grazing with our mini horses and llamas/alpacas), Michigan-specific tips, and how we manage pests without nerve toxins.
The corporate and regulatory reality is eye-opening, but it doesn’t have to define our farms. We can vote with our practices every single day.
Pin/save the series and drop a comment: Have you followed the chlorpyrifos ban battles or worried about organophosphate exposure? What worries you most about these nerve toxins near your homestead? I read every one.
If you want to support a small regenerative farm that refuses these chemicals, visit our shop for wildcrafted salves (soothing after a day of hand-weeding or torch work), herbal teas grown right here without sprays, or non-GMO seeds to grow your own clean food. Every order helps us keep doing it right.
We can build healthier futures for our animals and families—one toxin-free choice at a time.
See you in Part 6, farm gals!
With love from the pasture,
Kara
Lange Girl Farms
