The proposed bill amends Title 52 of the Idaho Code by adding a new Chapter 5, which addresses the increasing presence of rats, specifically the Norway rat and the roof rat, in Idaho. These rats are declared a public health and safety nuisance, an invasive species, an agricultural pest, and a vermin pest. The bill mandates the prompt abatement of these rats and outlines the responsibilities of the director of the Department of Agriculture, including coordinating with local authorities, developing a coordinated action plan by November 1, 2026, and creating public educational materials to assist in eradication efforts.

Additionally, the bill encourages the public and political subdivisions to report sightings of rats to the Idaho invasive species hotline, allowing the director to compile data on their movement and locations. The director is authorized to expend funds for abatement efforts and is required to make reports and educational materials publicly available. The bill is designated as "The Idaho Rodents of Unusual Size Act" and declares an emergency, allowing it to take effect immediately upon passage and approval.