Study of 286 cat/permethrin cases in London: https://journals.sagepub.com/doi/full/10.1016/j.jfms.2007.05...
Study of 750 cases in Australia: https://journals.sagepub.com/doi/full/10.1016/j.jfms.2009.12...
...we don't track this stuff nearly as well for pets as we do for humans but seems to have pretty robust evidence of toxicity.
Study of 286 cat/permethrin cases in London: https://journals.sagepub.com/doi/full/10.1016/j.jfms.2007.05...
Study of 750 cases in Australia: https://journals.sagepub.com/doi/full/10.1016/j.jfms.2009.12...
...we don't track this stuff nearly as well for pets as we do for humans but seems to have pretty robust evidence of toxicity.