I'm Evicting Mickey!

Mickey has decided that he wants to raise his family in our garage.  Actually, there are three empty houses on our street and Steve thinks Mickey's family lives in one of those houses.  Our neighbors all have dogs, so they like to come to our house for dinner.  I am so grossed out by this.  We have tried putting traps and poison in the garage to catch them, but that seems to only discourage them temporarily.  I would think the sight of their dead family members would discourage them from coming back.  I read online that mice do not like the smell of Ammonia, because it smells like the urine of their enemies, so I have been using Ammonia to clean the kitchen.  It does not smell very good at all and it only seems to work if I clean the kitchen every night and spray it around the doors.  I'm not sure how effective it's going to be long term though.  We haven't figured out yet how they are getting in.  I need a good way to make them leave forever.  I am officially giving Mickey and his family an eviction notice.  Please raise your family and find your food in a different house, preferably one very far away.  If anyone has any mouse evicting tips, I am willing to try just about anything at this point.