PROBLEM TO BE SOLVED: To provide a container that can continuously exterminate the Argentine ant (Linepithema humile) by stably holding a medicinal solution without polluting environment.SOLUTION: A liquid holding body 7 with a core pipe 6 in the center is mounted in the immediate back of an open port 4 in a thin pipe shape container 5 with one end of a pipe part 1 being closed and the other one end thereof serving as the open port 4, and a medicinal solution 8 is stored in the container 5, and further the liquid holding body 7 is impregnated with the medicinal solution 8. The medical solution 8 is inhibited from moving to the open port 4 by capillary force of the pipe part 1 of the container 5, and the medicinal solution 8 is prevented from leaking out of the open port 4 by the liquid holding body 7. The container 5 can stably be installed by grounding a linear portion 10 of a weight 9 attached to the pipe part 1 of the closure side with a linear portion 11 of a fringe 3. A sealing package seal 12 that remai
