P'raps you could downsize and look into milking goats?

Herb products for pets is a good idea, but you'd have to research like crazy, if you were making remedies. Messybeast's website, for example has reported that Tea Tree oil is likely toxic for cats.

However, I'm betting there are at least forty million cats in the UK who'd like some high quality fresh catnip, instead of the dry low potency chopped hay they get from commercial places. Do I hear a "Hell, Meow!"?