blue20ae

I have sonic chasers in the garage.  I brought them from XS Cargo just for fun.  I don't think they work, as I had mice in the garage from time to time (usually in the summer).  But then, I don't have a control test, on what-if there is no chasers.

I would suggest you try mouse traps.  I found once the traps are set, they may catch only once or twice.  Mice would avoid the traps area.