If you want to protect yourself against mosquitoes and draw – that seem to be everywhere This year you might have to switch on a heavy hitter. Insect experts reach for one thing: Permethrin.
This is what about the synthetic insecticide, plus how and when to use it.
How Permethrin works
Permethrin, which is derived from the Chrysanthemum flower, has since been used in one or another About 400 BC.. During the wars of the early 1800S, Napoleon dusted his soldiers with a Permethrin-like powder To control fleas and body locks, who protected them against anemia and gave them a physical lead over their enemies.
Permethrin is a neurotoxin that focuses on the nervous system of an insect, muscle spasms, paralysis and ultimately activates death. It functions as a contact insecticide, which means that it kills through direct contact when a bug lands on a treated surface. This distinguishes it distinguishes from deet -based rejecters that work in a different way. DEET “Blocks the sensors for an insect to find you, so you end up with a cloak of invisibility,” says Lee Haines, a medical entomologist at the University of Notre Dame who studies how insects spread diseases. “They are attracted to your heat, but they can’t find you.”
To visualize how Permethrin works, consider what would happen if you have eaten nothing but cotton candy for a week. “Can you imagine how hyperactive you would be?” Haines asks. The same happens with bugs: “If you see a mosquito that touches Permethrin, it shakes uncontrollably, it flies uncontrollably, as if it just had a lot of sugar. It buzzes around, and that is because all nerves shoot immediately.” That causes muscle spasms; Once the muscles of the insect are exhausted, it becomes paralyzed and then dies.
If that sounds unpleasant, it is. “It’s not a nice way to die,” says Haines.
Read more: 7 Surprising symptoms of Lyme disease
Permethrin is odorless and colorless, and insects cannot detect its presence, she adds. That helps to make it effective. In one study Of the Iranian military members, for example, the average number of mosquito bites in people who wear untreated uniforms were 108 per hour, compared to 10 per hour in soldiers who wear uniforms treated with permethrin.
In the meantime, Research has been found That people who wore socks and sneakers treated with permethrin were 74 times less likely to get a tick bite than those who wore untreated footwear. Participants in the study who carried shorts and T-shirts treated with Permethrin were about 5 and 2 times less likely to get tick bites than those who were fairly permethrin. The results emphasize “the potential of summer clothing treated with permethrin for considerably reducing tick bites and signs transferred by signs,” the researchers wrote.
DIY versus pre -treated clothing
How to apply Permethrin cases. To follow the DIY route, choose a product with a concentration of 0.5% Permethrin. You can buy a predetermined spray bottle or dilute a concentrated yourself.
You can Spray Permethrin on your clothingAccessories and equipment – Just not your skin. People often spray their pants, shirts, socks, shoes, hats, jacket, backpack and tent for example. (It does not harm clothes.) You usually have to apply it for 24 to 48 hours before you go out; In this way it has time to dry and bind to the material on which you sprayed it. Spray your clothes out and while it’s your body; For example, hang it on a washing line and spray it evenly so that it gets moist but does not drip.
Bobbi Pritt, a professor in laboratory medicine and pathology and the chairman of the clinical microbiology division in Mayo Clinic, always spray Permethrin on her equipment outside on her screen portic, which is well -ventilated. Keep in mind that the liquid shape can be toxic to cats, although it is safe as soon as it dries. At that moment: “You don’t have to worry about having a cat in your lap,” says Pritt, who runs the blog Creepy terrible beautiful parasites.
Read more: Long rejected, chronic illness of Lyme finally gets his moment
If you choose to spray permethrin on your clothing and equipment, you must keep track of when you do it. Most products last up to six weeks or six washes – which comes first – and then have to be applied again. That is a reason why some people prefer prolonged pre -treated clothing, which is sold in outdoor shops and can generally last up to 70 washes. It is the only insect view that is used for the factory treatment of clothing, According to the US Environmental Protection AgencyAnd the Risk Assessment Procedures of the EPA “showed that it is unlikely that clothing with the factory is somewhat immediately or long -term danger to people who wear the clothing,” their website said.
Haines recommends opting for pre -treated clothing instead of applying Permethrin yourself. “It’s much better to get factory clothing,” she says. “It will last longer and they had to test it to ensure that it works.” Moreover, it is used more consistently and eliminates the possibility of human errors from an imperfect spraying technique. It also removes the need for advanced preparation: people sometimes forget to apply permethrin to their clothing before they need it, but with pre -treated clothing you can grab and go.
What about natural bug sprays?
Permethrin is considered safe When used as prescribed. Research suggests that Less than 2% From the insecticide is absorbed by the skin when it is applied to clothing, and The EPA remarks That there are no known risks of Permethrin for women who are pregnant or are nursing. It is too Safe for children That are older than 2 months old. “From all the studies and data we have, it is considered reasonably safe, as long as you use it according to the instructions on the container of the specific brand you have,” says Pritt.
Yet some people prefer natural options. There are a few candidates: Oil from Citroen Eucalyptus can be applied to exposed skin and clothing and works well to ward off mosquitoes and ticks, says Haines; Make sure you get one with a concentration of 30% to 40% and dilute it with water before use. “It has a very strong scent and you have to apply it again every two to three hours, but it works,” she says. Tea tree oil, which also needs to be diluted, is another popular naturally insect resistant agent. The ‘smells’, according to Haines, who keeps insects away, but you have to apply for it so often as lemon eucalyptus.
“What I try to tell people is that, yes, there are alternatives, but you have to use them in a responsible way if you want to protect yourself,” she says. “The natural answer is never as good as an answer that has been adapted by a chemist to be a higher efficacy.”
Permethrin are part of your routine
Pritt thinks of Permethrin as “A piece of the puzzle – a tool in your toolbox to protect yourself against ticks and mosquitoes.” When she goes into the field to do research, she puts her pants in her socks and wears high boots. She squirts her entire outfit with permethrin the night before, so it is ready the next morning. She also squirts insect repellent on every exposed skin – often opting for oil from Lemon Eucalyptus, which she has found, works well for her.
Read more: The best and worst way to remove a tap
Haines uses a similar approach, but sprays a repulsion with 20% picaridine on its skin exposed. “It’s really deadly on ticks,” she says. “It works on mosquitoes and mosquitoes – it works on everything.” Moreover, it usually takes eight to 12 hours. It has no strong scent, she adds and is not greasy. Combine it with your clothing treated by Permethrin, and you will be much more protected against the bloodthirsty vermin of the summer.
#experts #ward #ticks #mosquitoes