Mice and Roof Rats in San Diego County
This is a major departure from what I usually write about, but it is important information that I think many will find helpful. We have been waging a four-month battle against roof rats and deer mice inside our home. Roof rats are large nocturnal rodents that nest in trees and love fruit. Rats are notorious for damaging electrical wiring by chewing off the insulation. Both rodents can carry diseases. Here are some products and services that worked well, had mixed results or didn't help at all.
A trail camera - Rats are a much bigger problem than mice. They are larger, noisier and more destructive. Mouse traps often don't work against rats and rat traps usually don't work against mice. It is important to know your pest. Rat poop is black and the size of plump grains of rice. Mouse poop is black and the size of salt crystals. When we noticed rat poop, we set up a trail camera to verify and also observe where they were accessing the roof. From the roof, they used an uncovered vent for a bathroom exhaust fan to enter a space between floors. We bought a Browning Strike Force trail camera. The most basic model is $124 and it is easy to set up. We also had to buy a SD card reader for about $20.