This is caused by ignorance of Buddhist teachings. Buddhism emphasizes that not killing is people-oriented, that is, not killing for killing, and spraying pesticides is to make food survive. I've seen similar cases, but I forgot it was Buddhist scriptures. When the Buddha was practicing in the bamboo forest, because India was a tropical rain forest, there were many insects. Little novice monk went to clean the toilet and found many insects, so he was puzzled: sweep! Will kill people; Without sweeping, how can thousands of people (at least "1250 monks") who practice with the Buddha go to the toilet? So I hurried to ask the Buddha what to do. Buddha said: it is not to kill insects, but to remove toilets. So the little novice monk didn't think clearly and went to clean the toilet. This example can be used as a good proof.

Secondly, we are not Buddhist disciples and do not understand Buddhist precepts. We only hear what others say. In fact, the changes of precepts are "open, cover, hold and commit", which are applied according to the actual situation in implementation. For example, the commandment of "not killing", killing is "breaking the precept", which is a heavy result; But killing a gangster who was about to blow up a building saved many people, not "breaking the precepts", but "opening the precepts", which was allowed by the precepts.