Results 1 to 10 of 21

Thread: Permethrin Kit

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Senior Member Knotty's Avatar
    Join Date
    Mar 2009
    Denville, NJ, USA
    DIY Stretch-Side
    DIY Cat Cut Hex
    Phoenix and Nest
    cinch buckles

    Permethrin Kit

    Here's a kit I put together for diluting 40% permethrin to treat clothing and gear.

    In the past I've used Sawyers and Repel Permanone products. The Repel product just didn't last very long. Last year I treated my gear with 10% permethrin purchased at Tractor Supply. It worked but the scent of the petroleum distillates was pretty strong (at first).

    This year I saw 40% permethrin at Tractor Supply. My thinking was that by using a more concentrated permethrin, there would be less distillates in each batch, so less smell.

    Since 40% is 80 times more than the 0.5% used for treating clothing the product needed to be diluted at an 80:1 ratio. The Sawyer dunk product comes in 6oz bottles. Converting to metric, that's 180mL per bottle. 180mL/80=2.25mL, which is the amount of permethrin in the Sawyer bottle. But for dunking Sawyer has you dump the contents into a bag and the fill the bottle with water twice more, dumping that into the bag as well. 3x6oz=18oz of total liquid to treat one set of clothes.

    I found a syringe from an old inkjet printer refill kit and used it to pull 2.5mL out of the 40% permethrin bottle. Rather than add that to a 6oz bottle and then need to dump two more 6 oz bottle of water in, I simply shot the permethrin into a 20oz Coke bottle filled with water.

    To have some 0.5% around for spraying, I added 10mL of permethrin to a 24oz spray bottle and labeled it accordingly. EDIT: Per Oh-No, Permethrin has very limited shelf life once mixed with water, so only mix when needed.

    Just treated three sets of clothing and a couple of hammocks. There is definitely much less smell in the fabric using this method.

    Here's the kit.

    Here's the Sawyer dunk product label.
    Last edited by Knotty; 05-20-2011 at 00:40.
    "Don't speak unless it improves the silence." -proverb
    DIY Gathered End Hammock
    DIY Stretch-Side Hammock
    Stretch-Side "Knotty Mod"
    DIY Bugnet

Similar Threads

  1. permethrin on UQ???
    By Athens-m50 in forum Under Quilts
    Replies: 4
    Last Post: 02-24-2013, 09:33
  2. 10 % permethrin
    By geobckmstr in forum General Hammock Talk
    Replies: 31
    Last Post: 05-09-2011, 11:36

Tags for this Thread


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts