Hi Michael , when i worked on a major resort for 2 yrs here in Coffs the landscapers told me that one of their pet mixes was based on coffee grounds . Apparentely one of them got onto a source in Sydney who supplied them with physically tons of grounds over the year . Must have been a helluva cappucino bar . btw have now got my web page up with links back to you and others . http://www.midcoast.com.au/~lukasz