1. Does Permethrin toxic to human?
Permethrin is over 2,250 times more toxic to ticks than humans; so just a little bit provides great protection safely.
2. Does Permethrin harmful to infants or children?
The EPA states "...There is reasonable certainty that Permethrin-treated clothing poses no harm to infants or children".
3. Can baby clothing treated by Permethrin?
Exposure risk of Permethrin-treated clothing to toddlers is 27 times below the EPA's Level of Concern (LOC).
4. Is Permethrin dangerous to my skin ?
Your skin metabolizes, or breaks down, Permethrin within fifteen minutes of contact with skin. The EPA precautionary statement, “Do Not Apply to Skin” indicates that Permethrin is ineffective when applied to skin.
5. Will Permethrin leave clothes & enter your skin, how harmful is that ?
All substances that contact the skin surface are absorbed to some extent, whether they are fabric finishes, cosmetics, sunscreens, or insect repellents. Studies performed by the U.S. Army have shown that about 0.5 percent per day of the permethrin in fabric may reach the skin surface of the wearer. However, since skin absorption of permethrin in humans is less than 2 percent, this amounts to a negligible absorbed dose. The EPA used these values in calculating permethrin absorption from wearing treated clothing and considers the human health effects acceptable
6. Can Permethrin cause skin irritation or sensitization from repeat use ?
Studies in animals have demonstrated that no skin irritation or sensitization is expected following direct application.
7. Does Permethrin cause reproductive effects?
Several animal developmental and reproductive studies (up to three generations) have demonstrated the absence of effects on male or female parents, or their offspring, except at exorbitant doses.
8. Does Permethrin ever leave the environment?
Permethrin breaks down quickly in the environment. The vapor phase reacts with sunlight to degrade the chemical within a few hours. If released to soil, permethrin is expected to have no mobility. Some will be broken down quickly as a vapor, while the remaining chemical will be absorbed by the soil and biodegraded in less than four weeks. If released into moving water, permethrin is expected to absorb to suspended solids and sediments. Degradation would occur within a few days.
9. Does Permethrin kill fish?
Permethrin is toxic to fish and should not be disposed of in waterways. The greatest danger to fish is from accidental spills of permethrin in quantity. Empty permethrin containers must be disposed of in a landfill. Residues from permethrin-treated clothing are not an environmental hazard since leaching of the chemical from fabric is negligible.
10. Does Permethrin cause cancer?
There is no epidemiological evidence to suggest that permethrin causes cancer in humans. Permethrin underwent over 15 years of testing and literally hundreds of toxicity studies before the U.S. Environmental Protection Agency (EPA) approved it for use by the public as a fabric treatment. Seven lifetime studies in animals (cancer assays) were performed. The EPA requested the FIFRA Scientific Advisory Panel, a group of independent experts, to review the collective data and assess the cancer-causing potential of permethrin. The panel concluded that: “…based on all the data together, the oncogenic potential of Permethrin [likelihood of producing tumors] was very weak. The possibility of oncogenic potential in man was extremely remote.” The U.S. Army also commissioned an independent review by the National Academy of Sciences (NAS) to assure permethrin’s safety for military personnel. Regarding the issue of permethrin carcinogenicity, the NAS noted: “Therefore, the subcommittee concludes that permethrin-impregnation of BDUs [Battle Dress Uniforms] is not a serious carcinogenic risk to field or nonfield military personnel or to garment workers.”
11. Will Permethrin ruin my clothes or equipment?
No. Permethrin will not damage clothes or equipment. Unlike DEET, which may harm some fabrics and materials, Permethrin is compatible for use even on fragile fabrics such as silk, plus all synthetics and waterproof membrane fabrics. Permethrin will not affect plastics or finishes.