Prevention is the best! Before you even set out on your plan of attack, search your house for all the possible places that these mice might use to gain access to your house. When you've marked all these possible tiny cracks, cut to size and fold tightly some aluminum screen and wedge these into those cracks. Apparently when they try to chew through this, their mouth and gums get injured in the process and this deters them from pursuing this point of access. It has worked for me so far.