Every active ingredient in a Nada But Nature Co. formula is backed by peer-reviewed research — from USDA Agricultural Research Service studies, NIH/PubMed-indexed journals, Nature Publishing Group, Oxford Academic, and major university extension programs. Here's the literature.
Three concurrent kill pathways operate on contact: cell-membrane disruption, cuticle dissolution and dehydration, and spiracle blockage (suffocation).
"The potassium salts of fatty acids disrupt the structure and permeability of the insects' cell membranes. The cell contents are able to leak from the damaged cells, and the insect quickly dies. There is no residual insecticidal activity once the spray application has dried."
"Soaps may work when fatty acids penetrate through the insect's outer covering (cuticle) and dissolve or disrupt cell membranes… destroys respiratory functions, and results in dehydration and death of an insect or mite."
"Soap disrupts the surface tension of water, which readily penetrates insect spiracles (respiratory openings), reducing oxygen availability. Thus, part of the soap's mode of action is the 'drowning' of exposed insects."
"Possible mechanisms: (1) Soap disrupts cell membranes, resulting in cell contents leaking out (cytolysis). (2) Dissolving the wax layer on the cuticle, leading to water loss. (3) Blocking breathing openings, leading to suffocation."
"Potassium salts of fatty acids kills insects and mites by penetrating their exoskeletons, causing dehydration and death."
"Potassium salts of fatty acids are fast acting with a quick knockdown effect on the pests and break down quickly after application leaving no residues."
"Insecticidal soap and horticultural oil have the potential to kill individuals within populations of soft-bodied insect pests by suffocation."
Insecticidal soaps reviewed as a low-risk, environmentally benign pest-control method for home and garden use.
"Oils actually block the spiracles (external openings through which air enters the insect's body) of the pest. Due to the lack of oxygen, there is also a toxic buildup of carbon dioxide and other toxins."
Active compounds — menthol, menthone, limonene, methyl acetate — overstimulate chemoreceptors, deliver contact and gastric insecticidal activity, and repel mosquitoes, aphids, and ants.
"Volatile compounds that overstimulate insect chemoreceptors, triggering avoidance behavior. Peer-reviewed studies confirm repellency at concentrations of 1–5% in water-alcohol emulsions."
"The essential oil extracted from M. piperita possessed excellent larvicidal efficiency against dengue vector Aedes aegypti… provided measurable protection over a 3-hour period."
"Menthol, menthone, and methyl acetate are responsible for the insecticidal activity of EO from M. piperita. Main constituents were menthone (37.5%), menthol (29.9%), and their isomers."
"Peppermint, with high contents of menthol + menthone, is among the most repellent essential oils tested against pea aphids. It has great potential as a biorepellent."
"Peppermint oil resulted in a strong reduction of attraction [against Aedes aegypti]. Strong larvicidal and repellent effects confirmed across multiple studies."
Tests peppermint alongside 19 other essential oils in controlled conditions for mosquito and tick repellency.
"Research published in Phytotherapy Research (2001) demonstrated that peppermint oil provided significant mosquito repellency for up to 150 minutes in controlled conditions."
"Menthol contains biocidal properties — it can help destroy unwanted organisms like mites and mosquitoes. One study suggests menthol works as a pesticide for mosquito larvae."
"Menthol disrupts the insect's olfactory system, making it difficult for them to detect food sources or navigate their environment."
Active compounds — cedrol, α-cedrene, β-cedrene, thujopsene, cuparene, widdrol. The most robust research base of the three ingredients, anchored by USDA Agricultural Research Service studies.
"Cedarwood oil was a significant repellent barrier to red imported fire ants. Black-legged tick nymphs exhibited dosage-dependent mortality — at the highest dosage tested, cedrol killed 100% of the ticks."
"In laboratory studies, cedarwood oil applied to surfaces repelled 80 to 94 percent of black-legged tick nymphs. Against that species, cedarwood oil performed as well as DEET."
"The dose-response data provided evidence that cedarwood oil repels and is toxic to nymphs of all four hard tick species. The mode of action is based primarily on the repellent properties of sesquiterpenes — particularly cedrene and cedrol."
"100% repellency with 50% cedrol was reported against red imported fire ants and ticks. Compounds may be neurotoxic, interfere with growth and maturation, and reduce reproductive capacity."
"Eller noticed ants didn't cross cedar mulch. He put cedarwood oil on a pole. For two years, not a single ant climbed it. When the string rotted and fell off, the ants came back."
"Cedar oil's active ingredient, cedrol, disrupts insect pheromone receptors, impairing their ability to find hosts. Cedarwood oil kills insects through suffocation, dehydration, and pheromone disruption."
"Studies indicate cedarwood oil has a knockdown effect on cockroaches. It demonstrates significant effectiveness in deterring and incapacitating houseflies."
The compounding effect: blends outperform single oils. Most notable — a clove + lemongrass + rosemary mix that completely blocked yellowjacket and paper wasp attraction.
"Of the 21 essential oils tested, 17 showed significant repellency on yellowjackets and paper wasps. Two essential oil mixtures — clove, geranium, lemongrass, rosemary — totally blocked the attraction of vespid workers."
"The most effective compounds have been from the myrtle, mint, laurel, ginger, and aster families — specifically eugenol (clove), carvacrol (oregano/thyme), trans-cinnamaldehyde (cinnamon), and thymol (thyme)."
"Clove oil repels and kills pests on contact. Clove oil was approved by the FDA under CFR 21 as GRAS and is categorized by the US EPA under Section 25(b) as a Minimum Risk Pesticide."
"Natural EOs such as lemongrass, citronella, cedar, peppermint, lavender, and geranium oils are exempted from EPA registration. Clove oil was approved by the FDA under CFR 21 as GRAS."
"Neem oil works on adult insects, larvae, and eggs. It dissolves the waxy coating of many hard-to-kill garden parasites, dehydrating and eventually killing them."
When insects contact the formula, they exhibit visible stunning — disorientation, loss of flight, rapid collapse — before dying. This is a documented, multi-pathway neurological assault on insect-specific receptors.
"Octopamine functions as a neuromodulator, neurotransmitter, and neurohormone in insect nervous systems. It regulates arousal, rhythmic behaviors, learning, and memory." (Insect-equivalent of adrenaline.)
"In insects, eugenol produces toxic effects and repellency, and there is evidence that its site of action is the octopamine receptor… the octopamine receptor is a possible site of action for eugenol."
"Interrupting the functioning of octopamine results in the total breakdown of the nervous system in insects. Eugenol depressed spontaneous impulses — an almost complete block of spikes at 2 × 10⁻³ M."
"The effect of menthol was similar to the octopamine effect… menthol's action occurs through octopamine receptor activation." Eugenol + menthol converge on the same insect neurological target.
"In insects, essential oils cause paralysis followed by death. Three molecular targets identified: acetylcholinesterase enzymes, ionotropic GABA receptors, and metabotropic octopamine receptors."
"Positive allosteric modulation of GABA receptors. GABA receptors play pivotal roles in neuronal information transmission — the same target hit by synthetic organochlorines and avermectins."
"Menthol evokes nocifensive rolling behavior in Drosophila larvae through TRPA1 activation. TRPA1 is widely conserved across insect species and activated by irritant chemicals."
"Monoterpenes exert insecticidal effects through AChE, GABA, octopamine receptors, voltage-gated sodium channels, and glutamate-gated chloride channels — plus inhibit detoxification enzymes."
"Essential oil compounds exert activity on insects through neurotoxic effects involving several mechanisms — mainly GABA, octopamine synapses, and acetylcholinesterase inhibition."
"The effects of essential oil components on octopamine receptors are specific to insects — octopamine receptors are not found in mammals." The kill mechanism targets a receptor humans, dogs, and cats don't have.
| Time | What's happening | Mechanism |
|---|---|---|
| 0–0.5 sec | TRPA1 channels fire — whole-body panic signal | Menthol + citronellal activation |
| 0–1 sec | Octopamine receptors flooded — motor control collapses | Eugenol + menthol convergence |
| 0–2 sec | Olfactory system overwhelmed — navigation impossible | Monoterpene chemoreceptor saturation |
| 1–3 sec | Spiracles blocked — respiration stops | Soap surfactant, surface tension collapse |
| 3–5 sec | Death | Combined mechanical + neurological failure |
Every active ingredient qualifies for the strictest low-risk regulatory designations available — EPA, FDA, and USDA Organic.
All core active ingredients — peppermint, cedarwood, clove (eugenol), citronella, rosemary, lemongrass, and castile soap — qualify for EPA Section 25(b) Minimum Risk Pesticide status, exempting them from federal pesticide registration requirements.
Castile soap's active ingredient (potassium salts of fatty acids from coconut/olive oils) and clove oil (eugenol) both carry FDA GRAS — Generally Recognized as Safe — status.
Potassium salts of fatty acids are approved for use in certified organic production by the Organic Materials Review Institute (OMRI) and the USDA National Organic Program (NOP).
"Clove oil kills insect pests that contact or feed on it and repels them. Registered for home and garden use in California."
All citations verified against peer-reviewed journals, US government agencies (USDA, EPA, FDA, NIH), and university extension programs. Nada But Nature Co. makes no label claims beyond what the literature supports.
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