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Ping,PingHansen said:Permethrin is unhealthy for humans as well, so do avoid all direct contact with items sprayed with the stuff.
Personally, I'd not consider wearing or using anything polluted with permethrin.
Yes, humans tolerate permethrin better than insects. No, permethrin is not without negative effects on humans. Permethrin, among other things, has a negative effect on the immune system.
PingHansen said:(waiting for the fall-out :mrgreen: )
Pyrethrins and pyrethroids are listed together by the US Environmental Protection Agency documenti as the second most common cause of symptomatic illness reported by the American Association of Poison Control Centers.
US Environmental Protection Agency, Recognition and Management of Pesticide Poisonings, 1999.
Skin exposure to pyrethroids can also cause paresthesia, such as numbness, itching, burning and tingling.
JM Knox et al., “Parasthesia from cutaneous exposure to a synthetic pyrethroid insecticide”, Arch Dermatol 120:744-746, 1984.
As early as the 1980’s, EPA described pyrethroids as neurotoxic.
Recognition and Management of Pesticide Poisonings, USEPA 4th Edition, March 1989.
Permethrin has been shown to damage chromosomes (genetic material) of human lymph cells, part of the immune system.
C Barrueco, A Herrera, C Caballo, E de la Pena. “Induction of structural chromosome aberrations in human lymphocyte cultures and CHO cells by permethrin. Teratog Carcinog Mutagen. 1994;14(1):31-8
Pyrethroids can impair immune function.
F. Diel et al, “Effects of permethrin on human basophils and lymphocytes in vitro”, Inflamm Research 47, Supplement I, S 11-12, 1998.
I had hoped not to engage in this debate again. I have challenged the relevance and accuracy of the statements PingHansen made when providing references to the harmful effects of pymethrin - it was longer and more detailed than I care to repeat here. In short all the references that have been given apply to topical use, and not to skin contact with pymethrin treated clothing and equipment.PingHansen said:MCVet said:With studies like these, you always have to consider what dosage they're at.
Permethrin IS harmful to humans, but with low exposure the advantage can be greater than the disadvantages, as most people won't perceive the effects.
Hi, John and other peregrinos!fe00312 said:Hi All,
First, I don't think that April will be a bad month for bedbugs but don't want to take chances so have purchase a Permethrin pump spray. There isn't much info on the bottle on how to apply it, particularly to my sleeping bag. Do people recommend spraying inside and out? Just the outside? Also, should I spray my pack? Finally, if I have spray left over after all that, should my actual clothes be sprayed? If so, what - outwear, socks, sleepwear?
John
Follow the label directions. Spray to completely cover, and let it dry before handling it. You only need one spray bottle from REI, not the bulk quantity. I do not know how well it will work on a plastic sheet, which won't absorb any of the permethrin. I suspect that it will rub off readily, and not be particularly effective. I have a soft Tyvek sheet which I treat. I use it mostly as a blanket.how MUCH to apply
msp41 said:here in my bugfree country I am not able to obtain this stuff. What do I do?
Very pleased you mentioned this - for the good health of my own very precious cat! TaJust a quick tip, but if you're going to spray permethrin to your pack, don't let cats rub against it if any are in the area (say, you put your pack down for a rest and a feral cat comes waltzing by). Same for clothes: if you spray your clothing with permethrin, don't pet any cats you find along the way. Permethrin is neurotoxic to cats.
The references that I have seen and provided conclude that transmission through the skin is negligible, and skin contact with treated clothing and equipment is NOT dangerous provided one doesn't get it one's eyes, nose, mouth etc. .
I agree that any decision to use permethrin on clothing and equipment needs to be made knowing one's own health status.For me, this is like telling a person with a fatal peanut allergy, "There is only ONE peanut in that salad."
...
It's just a personal decision.
Has anyone tried the carbolic soap suggestion?Leaving SJPDP on 23 April . I talked to a friend who suggests I try Carbolic soap. Just shave off a few slivers with your pocketknife and put it around the bottom of the bed frame under the mattress. Clean it up in the morning before you head out Apparently bedbugs & other creepy crawlers hate the stuff. I'm not going to use permethrin. Bedbugs also hate diatomic earth.
I've just come back and didn't have any issues with bugs - I'm not sure I'd botherHas anyone tried the carbolic soap suggestion?
I leave in Sept and I'm starting to develop a bit of phobia about bed bugs. It's such a relief to hear that you didn't have any problems. Did you treat your sleeping bag/sheets and pack? Many thanks, CherI've just come back and didn't have any issues with bugs - I'm not sure I'd bother
It is not a phobia. The problem is real. You can plan for it, or ignore it. Both courses of action have some probability of getting bites with the statistical edge going to treating your equipment and inspecting your lodging for signs of bedbugs. By September you will be following a full season of pilgrims bringing bed bugs to every accommodation. A tale of one person not having a problem does not mean there is not a problem. Every lodging in France has warnings and treatment recommendations. Every tourist office sells bed bug insecticide. Clearly they have identified a problem. The level of risk you take is entirely up to you, but the chinches are there!I leave in Sept and I'm starting to develop a bit of phobia about bed bugs.
hello, can any tell me if permethrin is available in australia?
thanks
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