Added - Laurie, that's hysterically funny! I love the "If You Give a Mouse a Cookie" nod too!!! You are so great!
Original:
Yikes! Sure does sound like it.
I think that if I were you, I'd hire pest control to come in. You need to find where they are coming in and have that fixed so that they can't continue to come in and out of your home. Look under the sink and see if there is ANY space around the drain. The only thing that they can't chew through is steel wool - it tears their mouths up. When I was a little girl, we moved to a house that had mice AND wolf rats in it. (And roaches!!!!) My dad dealt with the rodents, and my mom dealt with the roaches (God bless them both!) When my mom was cleaning under the sink, she pulled a whole loaf of half eaten bread out of a small hole under the sink. That was ONE of the places they were coming in.
The book "The Rats of NIMH" is one of my favorites stories I read as a child and with my kids. When reading it, aside from the cool story, you do find out how rodents are able to come in and "share" your dwelling. However, real mice and rats are not "cute" like the ones in the book, and you really have to get a handle on them. With rodents, it's really all or nothing.
Dawn