Re: [lowcountryBase] DEET
I don't care too much about the risks of cancer, neurodamage, or impacts on my unborn foetus, but fucked if I'm gonna let the shit get anywhere near my canopy or lines. That shit is a powerful non-polar solvent (meaning it eats synthetic materials for breakfast).
Warnings on the packets of DEET sold here in Aus state: "avoid contact with cell phones, spectacle frames, painted surfaces, SYNTHETIC FABRICS and vinyl plastics." I didn't see the same warning on the brand I used while in TF recently. All the guys I was jumping with were covering themselves in the stuff to get rid of the ticks in the landing area and the mozzies while packing - didn't affect them then, but I treat my gear better than I treat my penis.
I avoid the shit when I can, but if I'm somewhere getting eaten alive by bugs I only apply it to the areas exposed to the open air. I wash it off my hands before jumping to keep it off my pilot chute or canopy (its greasy as fuck anyway so its not much fun when climbing around on stuff where grip is important).
Clothing thats been impregnated with pyrethrum works good instead (you can buy a wash from most outdoor stores to treat all your outdoor clothes). If I don't have any repellant (and for ticks and other crawlies) i tuck all loose clothing in to stop em crawling up pants etc - makes me look like a dick but I'd rather look like a dick and be able to jump than to get some funky bush pox.
A random search online relating to the safety of pyrethrum:
"Pyrethrum is an insecticide and not a repellant. Pests that come in contact with it soon become paralyzed and die within minutes. Pyrethrum is effectively used as an airborne spray but it is most effective when used to treat textiles...
The application of Pyrethrum directly on the skin isn't recommended because it is generally not effective. If applied to skin, it is rapidly broken down and metabolized making if ineffective and there is no evidence that Pyrethrum accumulates in animal tissues. Solutions containing up to 5% Pyrethrum, which is more than five to ten times the concentration generally used is on the farm is approved by FDA for direct application to the scalp and hair as a head lice treatment."
And a medipedia link regarding impregnated clothing as an alternative... its what the guys in green use now:
http://wiki.medpedia.com/Permethrin_-_Impregnated_Clothing