BernerFolk
Wed, 19 Mar 2003 14:18:32 -0800
In a message dated 3/19/2003 4:19:21 PM Eastern Standard Time, [EMAIL PROTECTED] writes:
> Here is the web site for the Freedom Spot-On if you want to check it out. > I'm impressed by the price, and not so impressed by the claims because I've > often found that products that seem too good to be true usually is. > http://www.valleyvet.com/ct_detail.html?PGGUID=A51D4BD2-E2F6-4194-8D87- > 0EAF4F857EE4&ccd=IDW003 This is similar to the traditional flea & tick products in which the active ingredient is pyrethrin (extracted from chrysanthemums) or permethrin (the synthetic equivalent). These compounds are neurotoxins to one degree or another in most species, birds and fish are especially sensitive to it. These compounds have been used as broad spectrum insecticides for many years. The newer veterinary products are far more species specific in the mechanism they target. For example, Program blocks the development of chitin...critical to the development of fleas, but not a component of mammals makeup. I'm sorry, I don't recall the exact mechanism and species limitation for Frontline but you should be able to find it online. -Sherri Venditti