Also give diatomaceous earth a try.  It kills both fleas and intestinal worms 
and
is totally non-toxic.

Marshall

"d.linen" wrote:

> Thank you Karen. I had asked on behalf of someone on another list.
> Fortunately my cats are indoors and don't have the problem. I knew it
> was something fairly simple though.
>
> Diane
>
> fernwo...@aol.com wrote:
> >
> > Diane,
> >     I mix 1/4 teaspoon of brewer's yeast with each cat's canned cat food 
> > each
> > day from early March to after several frosts in the fall each year and they
> > have no fleas.  But the first year I tried it after they already had fleas
> > and it made the fleas leave the cats and bite us instead.  You need to start
> > a month or more before flea season to get it built up in their body.  It
> > makes them taste or smell bad to the fleas.  Since doing this we have had no
> > fleas for 6 years except one when we went on a 2 week vacation and I suspect
> > the person caring for the cats didn't always give it to them.
> >                                                                 Karen
> >
> > --
> > The silver-list is a moderated forum for discussion of colloidal silver.
> >
> > To join or quit silver-list or silver-digest send an e-mail message to:
> > silver-list-requ...@eskimo.com  -or-  silver-digest-requ...@eskimo.com
> > with the word subscribe or unsubscribe in the SUBJECT line.
> >
> > To post, address your message to: silver-list@eskimo.com
> > Silver-list archive: http://escribe.com/health/thesilverlist/index.html
> > List maintainer: Mike Devour <mdev...@eskimo.com>