Roof rats, Norway rats, mice and other rodents constitute an ongoing problem to residents in Santa Clara County. Rodents, especially roof rats are common co-inhabitants in our homes, regardless of socio-economic boundaries.
What attracts them? Unmanaged vegetation near buildings, particularly Algerian ivy, fruit trees where fruit is not cleaned up off the ground; homes with crawlspaces where the air vent screens are missing or have holes greater than the size of a quarter; any other holes in buildings that they can reach from the ground, by crawling up the wall or via cables from telephone poles, etc.
How to tell a Roof rat from a Norway rat? See below.