Vector-Borne Disease Treatment Chemicals (DEET, Picaridin, Permethrin Clothing Treatment, Pyrethroid Barrier Sprays, Expanded Mosquito/Tick Range, Climate-Driven Insecticide Demand) — household safety profile
Moderate riskClimate change is expanding the geographic range of disease-carrying mosquitoes and ticks, driving increased consumer and professional use of insecticides and repellents in regions that previously had minimal vector-borne disease risk.
What is this product?
Climate change is expanding the geographic range of disease-carrying mosquitoes and ticks, driving increased consumer and professional use of insecticides and repellents in regions that previously had minimal vector-borne disease risk. CDC data shows Lyme disease cases more than doubled from 2004 to 2019, with the blacklegged tick (Ixodes scapularis) expanding its range northward into Canada and westward across the upper Midwest. Aedes aegypti and Aedes albopictus mosquitoes — vectors for dengue, Zika, and chikungunya — are now established in Florida, Texas, and the Gulf Coast, with locally acquired dengue cases in Florida (2019-2023) and Texas (2023) signaling permanent tropical disease vector establishment in the continental US. This range expansion drives increased use of personal insect repellents (DEET, picaridin), clothing treatments (permethrin), and residential barrier sprays (bifenthrin, lambda-cyhalothrin), creating a chemical exposure feedback loop. DEET (N,N-diethyl-meta-toluamide) is the most widely used insect repellent globally, with over 200 million applications annually in the US. DEET has an extensive safety record — rare adverse neurological events (seizures, encephalopathy) have been reported at an estimated rate of less than 1 per 100 million applications, predominantly in children with excessive application or oral ingestion. However, DEET concentrations above 30% offer no additional duration of protection and increase dermal absorption. Picaridin (icaridin), a piperidine-based repellent, provides equivalent protection to DEET with lower skin irritation and no plasticizer effect (DEET dissolves certain plastics and synthetic fabrics). Permethrin, applied to clothing, gear, and military uniforms, is highly effective against ticks and mosquitoes (kills on contact rather than repelling) but is extremely toxic to cats — a single permethrin-treated garment in contact with a cat can cause fatal tremors, seizures, and death. EPA label warnings exist but awareness remains low among cat owners. Residential pyrethroid barrier sprays (bifenthrin, lambda-cyhalothrin) applied to yards and perimeters are increasingly popular, with the residential pest control market growing 8-12% annually in tick-endemic regions. Pyrethroids are neurotoxic to aquatic invertebrates at low ppb concentrations, and residential runoff contributes to documented surface water contamination.
What's in it
Click any compound name for its full safety profile, regulatory consensus, and exposure data.
Insect Repellent
Clothing Treatment
Frequently asked questions
No FAQs generated.
Look up Vector-Borne Disease Treatment Chemicals (DEET, Picaridin, Permethrin Clothing Treatment, Pyrethroid Barrier Sprays, Expanded Mosquito/Tick Range, Climate-Driven Insecticide Demand) in the home app
Search by ingredient, browse by category, or compare to alternatives in the live app.
Open in home View raw API dataReference data, not professional advice. Aggregates publicly available regulatory and scientific information. Why we built ALETHEIA →