As I understand it, the problem with many problem with many pear varieties is that they need to be exposed to cold weather or refrigeration in order to ripen for human use (though I often eat Bartlett fresh from the tree). On my trees, the fruit will often begin to rot while on the tree if not picked when prime. None of the fruit is left on the trees by the first frost around here.
I have refrigerated small amounts for deer use at a later date, but forty pounds doesn't last too long. Unpicked good quality fruit is eaten by blacktails here, but the deer more often choose the ripe apples off the adjacent trees over the poor quality/squishy unharvested pears. A ton or two of pear bait on the ground sounds like a nasty pile of rotting wasp bait to me. Yuk!
