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jwmiller39
member (15)member
 
06/12/2019 08:21AM
In the past, I've always used the Sawyer spray bottle stuff. I'd like to buy some permethrin concentrate to make it a little cheaper and possibly do the "soak" versus the spray on application. I've read in some previous threads that you should avoid concentrates that contain petroleum... however, upon further research, the Sawyer spray stuff also contains petroleum, just in a more diluted ratio (which obviously makes sense since the permethrin concentrate is "concentrated"). My research also indicates the petroleum in the permethrin blends is needed to help the permethrin adhere to the clothing (i.e. it allows for the permethrin to be effective). Two common concentrates I see out there are the Martins (10%) and the SFR 36.8% concentrate. Has anyone found one to work better than the other?

If you use some sort of permethrin concentrate (and not the sawyer spray), what do you use? have your clothes smelled after the application dried? (that seems to be a common argue against the concentrates). Are there any downsides to using the concentrate over the sawyer? It seems like the petroleum argument is the biggest argument against the concentrate I can find but its ironic because the Sawyer spray bottles contain petroleum also.
 
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Othello
senior member (90)senior membersenior member
 
06/12/2019 10:22AM
jwmiller39: "...My research also indicates the petroleum in the permethrin blends is needed to help the permethrin adhere to the clothing (i.e. it allows for the permethrin to be effective)."

Well, that's interesting, and the first time I've heard that. I've been using a concentrate with no petroleum in the mix (as far as I know). It seems to be effective, but I wonder whether I'm not getting the effectiveness I think I am...
 
jwmiller39
member (15)member
 
06/12/2019 11:05AM
What concentrate do you use that does not have petroleum? Perhaps there is an alternative chemical that helps the permethrin adhere to clothing
 
06/12/2019 11:13AM
Been using a 10% mix for several years, Duration™ 10% Permethrin Concentrate.
I does list petroleum ingredients, but has almost no smell wet, nothing dry. Mixed as directed, will treat "16 complete sets of clothing" "One set of clothing = 1 long sleeved shirt, 1 pair of pants and 1 pair of socks" quoted from the link. This is accurate and does last thru 6 weeks.

butthead
 
06/12/2019 12:12PM
For the past several years I've been using Hi-Yield 10% concentrate from my local farm store. I ran out recently when making a batch for one of my kids' summer camp clothes and ordered the SFR 36.8%.

I believe that mixed appropriately to the same final strengths, neither will be more effective than the other. The Hi-Yield does have an odor that mostly dissipates before first wear, definitely gone after a washing. Petroleum is listed as one of the chemicals.

I usually mix 1-2 gallon batches and collect the runoff for reuse.
 
TwoByGreenCanoe
distinguished member(831)distinguished memberdistinguished memberdistinguished memberdistinguished member
 
06/12/2019 03:09PM
Started out using Sawyer brand than switched to an agricultural type with lots of petroleum and now I use Martins. I find no difference in effectiveness between all three. I can not smell any unnatural smell with Martins.
 
Othello
senior member (90)senior membersenior member
 
06/12/2019 03:28PM
jwmiller39: "What concentrate do you use that does not have petroleum? Perhaps there is an alternative chemical that helps the permethrin adhere to clothing"

Happy Jack Kennel Dip II. It's a 17% concentrate that I dilute to 0.5%.
 
06/12/2019 03:59PM
I've used Martin's Permethrin SFR, 36.8% for about 8 years. It has a mild smell when it's wet but it completely goes away when it dries. 2 oz/gallon in a pump sprayer, very easy to spray a ton of gear.
 
Jasonf
member (16)member
 
06/12/2019 06:34PM
I use the Gordon's 10% from Tractor Supply and have had good luck with it. I mix to .5% in a 5 gallon bucket and soak tents, clothes, chairs, basically everything and then let air dry in my pole barn for a few days. Slight odor when wet and nothing when dry. It goes a looong ways.

https://www.tractorsupply.com/tsc/product/gordons-permethrin-10-livestock-and-premise-spray-32-oz
 
tumblehome
distinguished member(1453)distinguished memberdistinguished memberdistinguished memberdistinguished member
 
06/12/2019 08:54PM
Just a warning to cat owners. Wet permathrin is extremely toxic to them.
Tom
 
06/13/2019 06:30AM
some of the stuff at tractor supply places stink and will continue to stink for weeks. will try to post a link later to what I have used that smells a little initially, but goes away when it dries.
 
BobDobbs
distinguished member (416)distinguished memberdistinguished memberdistinguished member
 
06/13/2019 08:34AM
I've used several brands of the 36.8% from Amazon - all have worked well with minimal dry odor when diluted to .5%.

It's a lot cheaper that way, and I mix higher %'s to spray around the house.
 
Thwarted
distinguished member(1401)distinguished memberdistinguished memberdistinguished memberdistinguished member
 
06/13/2019 10:33AM
drnatus: "some of the stuff at tractor supply places stink and will continue to stink for weeks. will try to post a link later to what I have used that smells a little initially, but goes away when it dries.
"
Yup, have had that experience with product from TSC but I decided to double the strength so I thought it was my stupidity coming through. Took a while to wear off. Now I dilute only according to instructions and have had no issues. The product I am using now is Gordons Permetherin 10. I dilute it per instructions in a one gallon sprayer and use on cuffs, waists, socks, openings, etc. I do not try to cover everything. If I have product left I spray it on my house foundation.
 
06/13/2019 11:53AM
The first time we treated clothes with permethrin, we used the Sawyer spray. Effective, but not cheap. A trail-runner friend told me about treating his clothes using concentrate, and I did several 'net searches before trying it. Too much emphasis was put on using a concentrate without petroleum, and I never found any, so decided to use what I could get at my local Tractor Supply (Gordon's 10%, about $18/quart). While the initial solution (reduced to 0.5%) had a mild odor, the dried clothes have no odor.

Thanks for the timely reminder to retreat our clothes!

TZ
 
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