There is a "product" made for training dogs - it is coyote urine scent. A few drops scattered along the perimeter of your garden will scare off possums (and other garden pests like rabbits and even deer). The scent is strong when you first apply it but fades into the background within a day (to human noses). However it is pretty potent stuff and will last even through a fairly heavy rain. -- Andie Paysinger & the PENDRAGON Basenjis,Teafer,Cheesy,Singer & Player asenji@earthlink.net So. Calif. USA "In the face of adversity, be patient, in the face of a basenji, be prudent, be canny, be on your guard!" http://home.earthlink.net/~asenji/