Halsey is a small incorporated farm town on Highway 99E, six miles south of Shedd, built around grain and agriculture. The railroad corridor running through town gives rodents a covered travel lane straight from surrounding fields into neighborhoods, and the town's mid-century homes have aging crawl spaces and garages with easy entries. Fall harvest and the first rains combine into Halsey's peak pressure season, when displaced field rodents pour into town looking for shelter.
Halsey is an incorporated town with a real street grid: small single-family homes, many built in the mid-1900s, on modest lots with detached garages and sheds. The Union Pacific rail corridor and the 99E highway split the town, and both act as rodent travel lanes that connect fields to neighborhoods. Grain elevators, the Georgia-Pacific facility, and surrounding seed operations keep a resident rat and mouse population close at hand year-round.