Hi, I had a huge problem with mices in the last years and lost a lot of plants, shrubs and apple trees.
Last spring I started my mint project with planting a lot of mint plants, and also using cheap unbrewd mint tea for the winter time. I put it in and around my composter, in the planting whol when I planted plants and in each mice whole witch I found in the garden. This was a first time (in 7 years) that I had dhalias!
In my composter were no signs of mices!
I’m happy to say, it works for me. A month ago I planted a globe artichockes and a preannial kale. They still there!