Don't talk to me about mice - I've been sharing my home with the little b**tards for about a year and a half now and I'm at the end of my tether.
I tried humane mousetraps at first - caught 5 mice and drove them up to the park and released them.
They aren't cheap those mousetraps let me tell you. Nearly a fiver each.
Anyway, tried washing them out (they were full of mouse poo) and none of them worked again. The doors wouldn't stay up.
So humane mouse traps didn't work, and by this time the mice were starting to find their way into the kitchen cupboards and things. Eating all the food. Leaving poo everywhere. EUGH so unhygienic. NOT ON.
So we abandoned the humane approach and got serious.
Second attempt was poison. We bought boxes and boxes of the stuff. That isn't cheap either. Laid it all round the house (out of the way of my kiddo of course). It all got eaten. We refilled it. Still got eaten. Carried on refilling.
In all that time we only found ONE dead mouse. Meanwhile evidence of other mice very much alive still continued.
Attempt number 3:
regular snap mouse traps.
Now these are much cheaper. 99p per trap. That's more like it. We've got them laid around the house - again though, we've only caught one mouse.
The little b**tards eat the chocolate that is baiting the traps and somehow manage to avoid setting the traps off!
It's beyond a joke now. We've got zillions of them all over the place. They come out mostly at night - even when I'm sitting at the computer they'll pop their heads around and look at me.
Yes, they're very cute, but THEY MUST DIE!
We're moving out in a month or twos time, so before we do we're going to just get the exterminators in.
I tried to be kind. I didn't like the idea of killing them. Honestly though, after THIS long, now I just don't give a damn.
Having said all that, the only advice I can offer to you is...well....none really. I still have mice after more than a year, so basically......good luck!!
ETA: Don't be fooled into thinking that you only have one mouse. Where there is one mouse, there are at least 20 more. You probably have loads I'm sorry to tell you.