Permethryn again

Subject: Permethryn again
From: "George Appleby" <>
Date: Thu, 02 Jun 2005 15:15:30 +1000
Hi all
I noted a couple of weeks ago that there was a discussion about insect repellents for use in tropical areas. Permethryn was mentioned as being very good and safe for use. I just came across a container of poison for treating wood against borers: it contains "100 g/l Permethryn 25/75" and warns of dire consequences of contact of diluted solution to humans internally and externally, and to dispose in non-cop land away from water supply. If this poison is the same or similar to that being advocated for use when birding in tropical areas, I'd be very worried from a personal point of view and regarding the environment, particularly aquatic habitats.
I also noted that a Birding-aus correspondent stated that permethryn is "NOT carcinogenic in humans although some internet ratbags claim it to". Having read the information on the wood borer poison bottle and also a couple of reputable looking websites, I'd still very worried about the effect of permethrin on humans and the environment. If anyone knows if there are "safe" and "unsafe" versions of permethrin or safe concentrations of the chemical, please send a message to Birding-aus to clarify this situation.
George Appleby
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