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  1. #21
    Senior Member Phillipsart's Avatar
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    I'm finding this very confusing. I don't know what mixture we have here, to get that proper solution that's recommended,

  2. #22
    Knotty's Avatar
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    Quote Originally Posted by Phillipsart View Post
    I'm finding this very confusing. I don't know what mixture we have here, to get that proper solution that's recommended,
    Tell us what percent concentration you are starting with and we should be able to give you the answer for a spray on solution.

    Here's the basic concept:
    percent concentration/.5=dilution ratio

    10/.5=20 (20 parts water to 1 part permethrin concentrate)
    40/.5=80
    etc., etc.
    Knotty
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  3. #23
    Senior Member ice man's Avatar
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    On the question of where to get the high test permetherin... Go to a farm supply store or a vetenary supply store. look in the equine (That's horses to you city kids) dept. Tractor Supply here in Iowa has it for shure. In some sporting goods stores they have "Permanone clothing and gear" spray. Deet should be avoided at all costs for use on a hammock. IT MELTS NYLON! Just don't get liquid permetherin on your skin. It can dish up a migrane headache that pills won't cure. Once it's dry, tho it seems pretty much harmless to humans, and stays effective in the fabric through several washings.

  4. #24
    Senior Member SteelerNation's Avatar
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    Quote Originally Posted by Knotty View Post
    Tell us what percent concentration you are starting with and we should be able to give you the answer for a spray on solution.

    Here's the basic concept:
    percent concentration/.5=dilution ratio

    10/.5=20 (20 parts water to 1 part permethrin concentrate)
    40/.5=80
    etc., etc.
    And just to confirm - you mix the .5% permethrin with water at a concentration of 3 to 1 before dunking your clothes, right?

    That would mean that buying 10% permethrin, I would mix 1 oz of product with 20 ozs of water to get to .5%. I would then mix that with 40 ozs of water and dunk my clothes, right?

    Just making sure that I understand. Last time, I didn't dilute it and it was pretty strong. Also, don't want to spend more than I need to.

    Thanks for all the great info!

    SN
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  5. #25
    SlowBro's Avatar
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    Quote Originally Posted by ice man View Post
    ... Just don't get liquid permetherin on your skin. It can dish up a migrane headache that pills won't cure. Once it's dry, tho it seems pretty much harmless to humans, and stays effective in the fabric through several washings.
    I agree-Permethrin is a neurotoxin with high toxicity to insects and other arthropods and low toxicity to most mammals (that would be us) except cats. Kills fish pretty well, too. So don't get it on your cat and don't pour it in your local stream. Exposure of the liquid form to sunlight will deactivate it in a few hours so probably want to apply to clothing and gear in the shade. When dry it is very safe. Still should avoid skin contact especially with the higher concentration mixes.

    Having said all this, we give it to children and adults to rub on their bodies and leave over night for scabies infections- so you know it is pretty safe.

    -Mark
    Last edited by SlowBro; 08-06-2011 at 19:52.
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  6. #26
    Senior Member BillyBob58's Avatar
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    Steeler, I think there is some confusion here. You want to end up with 0.5 % solution.

    Quote Originally Posted by SteelerNation View Post
    And just to confirm - you mix the .5% permethrin with water at a concentration of 3 to 1 before dunking your clothes, right?

    You want to end up with 0.5% solution, so if you start with .5% you don't dilute at all


    That would mean that buying 10% permethrin, I would mix 1 oz of product with 20 ozs of water to get to .5%.

    Pretty much, except I think you want to start with 1 oz and end up with 20 total, right Y'all? But, either way, a minor dif.


    I would then mix that with 40 ozs of water and dunk my clothes, right?

    I don't think so. You were where you needed to be the 1st solution. Mixing that now with an additional 40 oz of water will get you way down from the .5% you are looking for. Just stick with 1 oz of 10% added to 19 oz of water, for a total of 20 oz of (after this dilution) 0.5%.

    10%/0.5%=20 or 20 to 1 dilution.


    Just making sure that I understand. Last time, I didn't dilute it and it was pretty strong. Also, don't want to spend more than I need to.

    I bet it was strong! Bet you didn't have any bugs!
    Thanks for all the great info!

    SN
    EDIT: Forget most of the above, because as OG pointed out below, Steeler is- as his post clearly said if I would read more carefully- talking about DUNKING. I am talking about spraying, which calls for 0.5% solution. Apparently dunking calls for a lower concentration. Which I did not know, as I have never dunked.
    Last edited by BillyBob58; 08-06-2011 at 22:38.
    For I consider that the sufferings of this present time are not worthy to be compared with the glory that is to be revealed to us....that the creation itself also will be set free from its slavery to corruption into the freedom of the glory of the children of God. For we know that the whole creation groans and suffers the pains of childbirth together until now.
    Romans 8:18,21-22

  7. #27
    Senior Member Phillipsart's Avatar
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    Quote Originally Posted by Knotty View Post
    Tell us what percent concentration you are starting with and we should be able to give you the answer for a spray on solution.

    Here's the basic concept:
    percent concentration/.5=dilution ratio

    10/.5=20 (20 parts water to 1 part permethrin concentrate)
    40/.5=80
    etc., etc.
    Hi Knotty, thanks for your offer of help.

    All I can find so far is this, http://www.travelgear.com.au/p/B1000...treatment+pack

    I don't know what the solution is. I looked at it in the store today, had it in my hands, but decided to put nit back on the shelf, because I was all confused and the salesman didn't know anything about it.

  8. #28
    Senior Member BillyBob58's Avatar
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    Quote Originally Posted by Phillipsart View Post
    Hi Knotty, thanks for your offer of help.

    All I can find so far is this, http://www.travelgear.com.au/p/B1000...treatment+pack

    I don't know what the solution is. I looked at it in the store today, had it in my hands, but decided to put nit back on the shelf, because I was all confused and the salesman didn't know anything about it.
    So then, the labels down in OZ don't state the % concentration? That is amazing!

    I notice the stuff linked to has 20 ml of 500 gm Permethrin per liter. How do you convert that to % solution? Is that 50%, or what is it? It must be pretty high, as the container holds only 20 ml! 20 ml is nothing, like 2/3 of an oz. You could never soak with that small amount. If that is indeed a 50% solution ( I have no idea) it would call for a lot of dilution. 50%/.5%= 100 times. Or the 20 ml in the package ( really, only 20 ml?) would be diluted to 2000 ml( 2 liters) or ~ 67 oz of final .5% product. But who knows, 1st we have to figure out what the starting % concentration is.
    Last edited by BillyBob58; 08-06-2011 at 21:10.
    For I consider that the sufferings of this present time are not worthy to be compared with the glory that is to be revealed to us....that the creation itself also will be set free from its slavery to corruption into the freedom of the glory of the children of God. For we know that the whole creation groans and suffers the pains of childbirth together until now.
    Romans 8:18,21-22

  9. #29
    in it for the naps oldgringo's Avatar
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    Quote Originally Posted by Knotty View Post
    Careful with the math here folks. The Sawyer product is 0.5% permethrin which can also be expressed as 0.005.

    If you are using a higher concentration product you need to dilute it properly.

    10% product, dilute 20:1
    40% product, dilute 80:1

    The values above are for a spray on solution.

    In their dunk kit, you get 6oz of 0.5% permethrin which you then mix with another 12oz of water, making it more dilute. One set of clothes is soaked for at least two hours in that and then hung to dry.

    Additional info here.
    BB, I'm with Steeler...this indicates a further 2:1 dilution for dunking.
    Dave

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  10. #30
    Senior Member Phillipsart's Avatar
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    Quote Originally Posted by BillyBob58 View Post
    So then, the labels down in OZ don't state the % concentration? That is amazing!

    I notice the stuff linked to has 20 ml of 500 gm Permethrin per liter. How do you convert that to % solution? Is that 50%, or what is it? It must be pretty high, as the container holds only 20 ml! 20 ml is nothing, like 2/3 of an oz. You could never soak with that small amount. If that is indeed a 50% solution ( I have no idea) it would call for a lot of dilution. 50%/.5%= 100 times. Or the 20 ml in the package ( really, only 20 ml?) would be diluted to 2000 ml( 2 liters) or ~ 67 oz of final .5% product. But who knows, 1st we have to figure out what the starting % concentration is.
    Yes, my initial thoughts, very confusing and I think a bit to expensive, I see if I can find another source, a lot cheaper.
    Found another website that has a bit more info, says there's enough solution to soak a maximum 10 shirts.

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