My Dog Keeps On Barking. He's Driving Me Crazy!

I already found out the cause of all the barking! There have been floods recently here in the Philippines and apparently the were 2 big rats on our property because we live in a high place. They probably escaped to our place so they won't drown. One was around 7 inches long and the other was 5. They were really scary! We spent all night trying to chase them out! It seems they didn't come back because our dog was quiet for the rest of the night. My husband plans to put some chicken wire below our gate so any rats won't be able to enter next time.