My budgies live outside in a little shed/room out the back of our house and we had a mice problem too and I even saw the mice scale up the side of the bird cage and get into their cage! It freaked me out soooo much!
We also have guinea pigs that live next to my budgies and it grossed me out to think the mice might run through their cage and spread germs!
We left baits out & so far I havenít seen any mice for a while thank goodness!
I hope you can manage to get rid of them!
Sent from my iPhone using Tapatalk