PROBLEM TO BE SOLVED: To stabilize concentration of pest control gas such as carbonic acid gas by stabilizing a shape of a bag-like object without being affected by a wind and the like, in the case of obtainment of a pest control device for choking noxious insects, which adhere to crops, by using the pest control gas.SOLUTION: The pest control device of the present invention includes: a skeleton structure that is assembled by connecting members for being turned into a skeleton; a bag body for covering the skeleton structure in such a manner as to surround it; and pest control gas that is introduced into the bag body.
