any advice on how to get rid of rodents?

[BlueTexasMan]

10. Infestation of rodents

I had a real problem with rats and mice after I kept killing the rat snakes that were eating the eggs and baby chicks. One day when spraying the yard with Cutters flea and mosquito spray (the kind you attach a hose to), I decided to spray inside the chicken house. Nothing happened until I sprayed on top of the laying boxes. Apparently the mice were living up there and they exploded out of there like a bomb had gone off. They hated the stuff! Might work for you if you sprayed under the house or through a hole in the wall.
As to what bait for rats, scratch then drill a hole in an almond with a deck screw (gently) and put it on the bait tang of a large rat trap (bend up the pointy sharp part and gently push it on). Works great and sometimes you can even reuse the almond.
When I quit shooting the rat snakes, the problem went away. Now when I catch one eating the eggs, I just spank it with a piece of bamboo and it stays gone for a good long while.
Don't let kitty eat the mice, our cat got sick several times and the vet said the mice had bad bacteria that caused it.
Back in the day grandma had a rat snake that lived under the sink! Ha.. not me, too creepy. Good luck and vote blue all the way down!