No, I don't use their flea products, we use Advantage-works like a charm! I have never been that big on flea collar either, the only part it is protecting from fleas is their neck. I was wondering if anyone else has has any problems with their products? I haven't I have saved many a kitten's lives buy using Hartz KMR, and use the hairball remedy with works too. I have used their flea collars in the past, they sucked but didn't harm the cat.
Come to think of it, I do have some Hartz shampoo (flea and tick I believe) that I bought back last summer.... I only used it a couple times cause I have other shampoos that smell better, but I think I will throw it away, I don't need it anyhow since we started using Advantage since then. Yeah I am going to throw it out, I never use two flea products at the same time, especially different brands, that is asking for trouble.
I thought that sounded a tad bit over exaggerated. LOL. Those things probably did happen, but that can happen with any product with pesticides, like you said. Stupid people should read labels and side effects, I always do on EVERYTHING, well only my pet stuff, lol.