As the cool weather approaches, so does the likelihood that rodents will be seeking warm nesting sites in the attics, garages and foundations of our homes and commercial buildings. In fact, some of our customers who live near wildfire areas have experienced an unseasonably early influx of these critters, driven from woods and fields by the smoke and flames. The two most common rodent invaders are mice and rats. In our region of Central-Northern California, the two most common species of pest rats are the roof rat (Rattus rattus) and the Norway rat (Rattus norvegicus), neither of which are native to California but originated in the Far East and spread across the globe centuries ago. The r