I live on a farm and we have tons of rodents, field mice, chipmunks, moles and voles just to name a couple. there is no way of going around this around here and we had them before the chickens arrived. However I got real good pest control, for one the chickens, second the barn owls around here, the foxes, the hawks and of course blue jays and whiskey jacks all eat mice and small rodents.
I am not concerned about the rodents, they have been staying away from the house, in the spring and summer I sometimes find rodent nests in the barn. I take all the babies including the nesting materials the mother used and then wait for mom to come back when she does I get her too and relocate her and the nest of babies to the back of the land into an old broken down shed.
If they are in my house inevitably they will end up dead, cause I have cats, but if I can live trap them I will release them. I have rodent houses along the tree lines made of dowel and a tennis ball with a hole cut into them.
this year is the first one they have stayed away from the house, maybe because they are finding food out by the bird feeders and on the ground in the barn outside the coop. I really don't mind this at all. Because they are cleaning up the bits on the ground and there is nothing in there they can damage. All my feed is stored in large barrels that are covered. Only seen a mouse in the coop once, and never since. I find Dh spills food when he tries to give feed or snacks to the chickens, and that is what they are cleaning up.
Ema