To follow on Margaret, probably not a good idea. I remembered Kay Lancaster writing about the chemicals and how they can harm pets and wildlife. For cats in the garden, my suggestion is tight planting and mulching with hard to move stuff (larger rather than smaller woodchips, for example). My experience has been that cats like easy to work soil/areas, and if you make it tough (they have to work their way in between the plants, they mulch is largish and unpleasant) they go elsewhere. Some other things I've used (depending on the area) are rose clippings (they don't like the thorns) strewn around the area, and citrus peel (which they odn't like the smell of. FWIW. And none of these will hurt any animals or people in the vicinity. Kari--owner of 5 indoor only cats Kari Whittenberger-Keith kariwk@oregon.uoregon.edu Managing Editor, Old House Chronicle http://www.oldhousechronicle.com