The only studies I've seen on the subject that have said that concluded vines were safe dealt with cattle, and according to Toxic Plants of North America, a pound of leaves is a toxic dose to a human. If I were to do the math on that based on body weight toxic doses are easily achievable by an overzealous duck in the garden.
I'll continue to hold back on tomato plant matter, though that's easy since I never plant much in that family anyway.
I'll continue to hold back on tomato plant matter, though that's easy since I never plant much in that family anyway.