**Chapter 2**

*Rodents*

71: 1-5.

[19] Tanikawa T. Difference in consumption of warfarin baits and lethal days between resistant and susceptible colonies of the roof rats, *Rattus rattus*, in Japan (In Japanese with English abstract). Japanese Journal of Sanitary Zoology. 1991; **42**: 99-102

[20] Ministry of Internal Affairs and Communications. Whitepaper on Population Aging in 2017 Fiscal Year [Internet]. Available from: http:// soumu.go.jp/h25/html/nc123110.html [Accessed: 22 December 2020]

[21] Motoki M, Izumi Y. Black rat control in a house of an aged man living alone (In Japanese). Nezumi Joho. 2015; no.

[22] Yaguchi N. Society of aged people and rat problems (In Japanese). Nezumi

Joho. 2015; no. 72: 1-9.

**6**
