Pennyroyal oil is often sold as a natural flea repellent for cats. It can be
slightly irritating in that form, but certainly not in leaf form. Go for it.

"Charles Packer" wrote in message
om...
Because my wife is acutely sensitive to mosquito bites, I've
agreed to commit significant space in our yard to plants said to
be disagreeable to mosquitoes. I've focused on pennyroyal
(mentha pulegium). However, we have a cat, so I want to run this
idea by the cat folks as well as the gardeners. Any comments?


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(Charles Packer)
http://cpacker.org/whatnews