Legal analysis: first call the police, then ask an experienced pesticide expert to identify what kind of poison it is, and take detoxification measures according to the type of poison. At the same time, if the farm causes serious losses, it can apply for compensation from the other party after the police solve the case, so it is necessary to evaluate and keep relevant bills and evidence. You can call the police directly, then the police station will identify the loss, and then you can directly sue the court for civil disputes. If the loss amount reaches 5000 yuan (in different places), it can be directly handled as a criminal case and investigated for criminal responsibility.

Legal basis: Article 55 of the Civil Procedure Law of People's Republic of China (PRC) may bring a lawsuit to the people's court for any act that pollutes the environment, infringes upon the legitimate rights and interests of many consumers or harms the public interests. In performing their duties, the people's procuratorate may bring a lawsuit to the people's court if it finds that there are acts that undermine the ecological environment and resource protection, infringe upon the legitimate rights and interests of many consumers in the field of food and drug safety, and other acts that harm the public interest, and there is no organ or organization specified in the preceding paragraph or the organ or organization specified in the preceding paragraph does not bring a lawsuit. Where an organ or organization mentioned in the preceding paragraph brings a lawsuit, the people's procuratorate may support the prosecution.