Hey there! For reference, we live directly in a forest, and we have been carving out vegetable gardens from the bush using mostly hugelkulture mounds for planting. I have also tried to mulch the paths in between for weed suppression, mostly. Our last mulch experiment has been leaves we got from the local county. The first thing my husband said when I talked to him about it was that he thought it would attract mice.
Well, he was right. Although, I think they were already there, especially in the one hugel mound for sure. The problem with the mounds (from what I have been researching on here from other readers) is that there is too little dirt and too many holes between the wood and the branches. This thread was especially helpful:
https://permies.com/t/184385/Venting-hugels
So, I see how this can be improved for next year, by adding more dirt and suppressing them down in the fall. But... for now, I saw a fat mouse bodly walking across the mound yesterday and need to do something. I did do research but would just love to hear what worked for you personally, in your situation.
By the way, we do have two cats but they are quite elderly and have mostly retired to the indoor space, which is safer for them, but also perpetuates the problem. They used to really help in that regard. My dog does like to chase mice but she has received heck for trampling the garden before, and now she is reluctant to go near it. Now, I wish she would get in there!
Thanks so much in advance for any sharing.