Stupid mice

So, when I was pregnant with Rachie (4 years ago), we had mice get into our kitchen because the garbage can was under the sink. It took a few weeks to get rid of them all, and Steve patched up all the places he thought they may have come in from. The other day I saw that the bag of birdseed I have had under our kitchen sink for at least 2 years had been nibbled on. I didn't think much of it, because I haven't seen any signs of mice, I cleaned it up and figured it must have been a one time thing. Not so lucky. Just now I was downstairs watching TV and I could hear something rustling around in the kitchen. It sounds like it is behind the fridge, which means that either there is a hole somewhere back there or it came out from under the sink. I told Steve and he says he will set traps tomorrow. I am freaking out because that means I have to sit here all day knowing I have a mouse in my kitchen. GROSS!!! I didn't think that mice liked birdseed. I never would have kept it under there if I had known. I am tempted to find some sort of food and put it OUTSIDE so maybe the dumb mouse will stay out there instead of coming in my house. All I can say is that Steve better find and fill any place that looks like a hole a mouse might be able to get in through or I am calling a professional to come and take care of it.