Mmmm…….indoor chickens means in-your-house?
If so, you do not want to go light handed here. You don’t want mice in your home, walls, pantry etc. and if you are asking, maybe you already have a problem.
Everything food related goes into containers -metal is recommended. Water is placed where chickens can access, but rodents cannot…so, not on the ground as first rule.
Poisons: best overall solution to a rodent problem. Research them, as all do not work the same and all are not detrimental to pets. There are a few general categories as to how they work and it is best to learn for yourself so you can make an educated decision for your specific situation.
Deterrents: mint I think is one deterrent. Not sure about cinnamon.
Important note: rodents are disease vectors, and are not in any danger of becoming a threatened species. They are considered pests, so deal with them so your problem is resolved or you do not encourage a rodent problem to develop.
We live rural, we use outdoor bait stations and monitor them. We change out the poison 2-3 x a year or more often with activity. In certain locations, glue traps work best. We will always have rodents around us, but we don’t want them in the house or barn, to the best of our ability.
Good luck.