Hi Christine,
I know the link to Canine Natural Cures is for herbal stuff but everyone just beware of their homeopathic stuff. I don't know if you follwed this thread
http://www.champdogsforum.co.uk/cgi-bin/board/topic_show.pl?tid=34636but the Co. was Can. Nat. Cur.
I strongly suspect they are selling ordinary homeopathic remedies under their own trade names and charging a lot for them.
For fleas I use homeopathic Sulphur, Brewers Yeast, Garlic (but not too much as it's the onion family and can cause anaemia in big amounts), and cider apple vinegar. I also put a drop of tea tree and lavender on her collar every couple of weeks ( * but don't use those while pregnant or nursing *). Daily vaccuuming and changing the dogs bedding helps too. Bess has a piece of duvet and I made a waterproof cover so the fleas can't get into it to lay their eggs.
Kath.