I use Decon.
The 'camp' in VT is not occupied at times and mice always got in.
When Decon came out I tried it and the mice have been gone for decades.
I use the Decon trays of poison.
The Decon site shows traps and I don't need to use traps as I am not there all of the time and they seem to leave the camp and die elsewhere.
Decon 
