Mice problem...HELP? We are having trouble determining where on earth the mice are entering...

We are having trouble determining where on earth the mice are entering from.. We know they are coming from outside and have tried to trademark up all the holes and crevices beside the Great Stuff but we still find mouse poop in the drawers. It's driving me crazy!!

How can we determining the footprints in which they come into the house?
What can I do to lower my monthly...
Answers:    We have the same problem years stern. We got an outside cat and he took consideration of the problem. Then something got the cat. The mice come back. My husband in a minute sets mouse traps and that seems to hold solved the problem. Never leave any door interested! Check around the dryer vent and all the plumbing around the pipes.

"Em little critters really approaching to find a way surrounded by when it starts getting cold outside.

GOOD LUCK!

P.S.
If he is wearing a sweater and his name is "Ralph", he would label a great pet for the kids!
Bee problem.. cant sit out on front porch?
well you should procure some mice traps it will kill yhem.