Thank you for using Improve Detroit. Utilizing the category "Post to Neighbors" functions more like an online blog. In order to route a request directly to a department, you must select one of the specific categories that are available (for example, "Illegal Dumping" or "Abandoned Vehicle"). Rodent Extermination may be requested via telephone to the City of Detroit’s Environmental Enforcement Department at 313-876-0974. More information can be found here: http://www.detroitmi.gov/How-Do-I/Request-a-Service/Environmental-Enforcement-Information Thank you.