Personally, I feed them very well, that is to say that I feed them all the rat bait that they can eat!
Tom Cat rat bait boxes with rat bars and the pelletized rat bait... mice seem to think the tiny granular bait is a gourmet treat...
Frito Lay puts lots of these bait boxes along the perimeter of there distribution systems...
Mice traps....put them perpendicular & touching the edge of the wall .... rodents like to run along the sides of the building etc... Peanut butter on the traps works great
the round ones are pretty fool proof, but you only get one use per trap...but a great last line of defense in a trailer...
there are multi use traps that use bait and glue strips to catch multiple mice....
Saw one odd homeade trap...it was a 5 gallon pail.... bottom with some water...the top had a beer can smeared with peanut butter with a coat hanger through the centers...making a roller for the critters to run up the stick on the side of the pail allowing them to jump on the can to get to the bait...they fall and drown in the water / antifreeze
To keep them out of cracks & crevices....stuff the hole with STEEL WOOL...it's impervious to them
Sadly, it's a never ending challenge to bait and trap the nuisances!