For years I read of peanut butter and plaster of paris bon bons as a means
of poisoning squirrels. It failed me and I posted my complaint on the
Gardenweb fruit forum where this method was frequently touted. A very
thoughtful grower in Kansas trapped two squirrels and fed one of them 50-50
bon bons and the other more normal food. They both ate their food and
continued to live for quite a spell until he figured it was long enough to
know the bon bons weren't going to work.
[nafex] squirrels and PP, PB bon bons,
Alan Haigh, 11/26/2013