Missouri Revised Statutes Title XVII. Agriculture and Animals § 263.509. Director's right to enter premises to eradicate and inspect, requirements--court may issue a warrant for right of entry, when

1. The director of the department may enter cotton fields, cotton processing facilities, and other premises in order to carry out suppression or eradication activities, including, but not limited to, treatment with pesticides, monitoring, and destruction of growing cotton or other host plants, as may be necessary to carry out the provisions of sections 263.500 to 263.537.

2. The department may make inspection of any fields or premises in this state and any property located therein or thereon for the purpose of determining whether such property is infested with the boll weevil. Such inspection and other activities shall be conducted in a reasonable manner without a warrant at any reasonable daylight hours falling between sunrise and sunset.

3. Any judge of this state may, within his jurisdiction, and upon proper cause shown, issue a warrant giving the department the right of entry to any premises for the purpose of carrying out the provisions of this section or other activities authorized by sections 263.500 to 263.537.