I tested a piece of 100 percent polyester thread with 100% DEET. I
applied it and let it soak for several hours. The thread was not any
weaker for the exposure to the DEET.
--- In firstname.lastname@example.org, "Risk" <ra1@i...> wrote:
> Shane certainly has much more experience than I have. I almost never
> use DEET, and he needs to down in LA!
> Given the advice I found with a simple search of the net, I think that
> using DEET on skin and then crawling into a nylon hammock is probably
> OK for the nylon. I could not find evidence about polyester and DEET.
> The thread I use when building hammocks is 100 percent polyester. I
> am not sure what the HH builders use.
> I had been taught this trail legend many times... but when I went out
> just now to investigate, Shane is completely correct according to the
> majority of sources I found about nylon:
> DEET can damage some plastics and synthetic fabrics, such as nylon and
> acetate, so be careful not to damage clothing or camping equipment.
> DEET can damage plastics, synthetic fabrics, leather, and painted or
> varnished materials, so keep it away from eyeglasses, watch crystals,
> walls and furniture. DEET doesn't harm nylon or natural fibers, such
> as cotton or wool.
> Never put DEET based repellants on plastics, acetate, spandex or
> nylon, as the DEET can damage these materials. Spraying your pack and
> jacket or rain gear, is not a good idea.
> Do not apply DEET formulations on or near plastics, acetate,rayon,
> Spandex, synthetic fabrics (other than nylon), furniture finishes,
> leather, watch crystals, and painted or varnished surfaces. Plastic
> glass frames and goggles should be protected from DEET applications.
> Car finishes and interiors also may be damaged by DEET. It will not
> damage nylon, cotton, or wool fabrics.
> (Diethyltoluamide will not damage clothing materials, such as cotton,
> wool, or nylon. However, it may damage acetate, rayon, spandex, or
> some other synthetic materials.
> --- In email@example.com, "Shane" <shane@t...> wrote:
> > > I strongly advise against applying DEET to the nylon fabric. I even
> > > advise against getting it on the fabric by accident from your
> skin. It
> > > seems to be a solvent for nylon and will at least weaken the
> fabric. It
> > > may cause the fabric to fail.
> > Have you experienced failures? DEET will dissolve plastic
> instantly, but is
> > non-reactive with nylon. I have sprayed DEET all over nylon
> > other nylon things. I frequently lay (both inside and outside) of
> > after freshly spraying DEET on myself. I have never had any failure.
> > It isn't effective on the hammock - permethrin should be used - but
> I don't
> > think it will hurt a nylon hammock.
> > Shane