Irrigation canals around Boise have served as a rat superhighway, bringing an infestation so serious that health officials have floated declaring a public emergency.
More than 1,000 miles of irrigation canals and ditches thread through the Treasure Valley in Idaho, transforming what was once an arid and remote high desert into one of the most fertile and fastest-growing parts of the country.
They’re also a rat su... [1117 chars]