Who should pay the responsibility for the death of others if their fruit trees are poisoned?

The owner of the orchard should bear criminal and civil responsibilities. Because highly toxic and residual pesticides can't be used on fruits and vegetables, they are suspected of endangering the safety of the public (poisoning); Furthermore, after spraying highly toxic pesticides, I didn't hang a notice board and didn't fulfill my obligation to inform, so I have to bear the corresponding responsibility for pesticide poisoning accidents.

If you do the following two things in advance, you can avoid the responsibility. If you only do a little or nothing, you should pay some responsibility, depending on the casualties of the poisoned person.

Have taken sufficient measures to prevent others from stealing food (that is, if the fruit of a fruit tree is easy to be obtained by others, it is regarded as deliberately indulging others to steal it, at least a sign should be put up to write "Keep your eyes on your hands" and so on)

After spraying, mark it in a conspicuous place (that is, put up a slogan and write a notice in an easy-to-see place to explain that your fruit tree has been sprayed recently)

If