Multnomah County rat inspections have fallen by more than half since 2019, and county rat experts don’t know why. “Yeah, that’s a mystery,” said Christopher Roberts, a Multnomah County Public Health ...

The rats appearing are the big, invasive Norway rats that have bedeviled cities like New York and Los Angeles for decades.

You may want to keep your leftover Thanksgiving turkey, stuffing and mashed potatoes sealed up this year, or you could be contributing to an increasing problem in the Treasure Valley: rats.