The 'letting them go outside' sounds nice and humane and everything, but they'll just come right back in, unless you blindfold them, bundle them into the back of a Volvo 940 Estate, drive them to an abandoned abbatoir just outside Arbroath...oh wait, that was..something else..carry on..

When hoovering up insects besure to sterilize the canister/dispose of the bag. Otherwise you risk eggs hatching all up in there and now you've just given them a nice nest to raise their dark army of nuisance.

This brings about a whole new use of Becan!

jamesg1213
The 'letting them go outside' sounds nice and humane and everything, but they'll just come right back in, unless you blindfold them, bundle them into the back of a Volvo 940 Estate, drive them to an abandoned abbatoir just outside Arbroath...oh wait, that was..something else..carry on..

And the local constabulary was nun the wiser. 

Nun The Wiser.
 
Great band name or Best band name?
 

bayoubill
This brings about a whole new waste of Becan!

BlastFeemer!!!!
 
Fixed.

Thanks for the advice, everyone. OK, Jif or Skippy...hopefully I don't have to buy a whole jar of that crap, as I'll never eat it. I suppose I could try the brand I eat myself (Adams Unsalted Old Fashioned), but I suspect it may be the partially-hydrogenated vegetable oil in the kiddie brands that the mice actually like.
 
If I do end up making a trip to the grocery store, I'll pick up some peppermint oil as well. That could help combat the ammonia smell, and be better for my equipment than the incense sticks I'm using ATM.

bitflipper
Thanks for the advice, everyone. OK, Jif or Skippy...hopefully I don't have to buy a whole jar of that crap, as I'll never eat it. I suppose I could try the brand I eat myself (Adams Unsalted Old Fashioned), but I suspect it may be the partially-hydrogenated vegetable oil in the kiddie brands that the mice actually like.
 
If I do end up making a trip to the grocery store, I'll pick up some peppermint oil as well. That could help combat the ammonia smell, and be better for my equipment than the incense sticks I'm using ATM.

No, any kind of (healthy) nut butter will work.  I have used cashew butter with notable success.
 
Also, I have had great success with humane traps (clear green plastic devices about eight inches long).  Assuming you don't have an entry port (as opposed to the creature entering when you had the door open), the released mouse can't get back in.  If you do have an open crack (it can be pretty damn tiny - the size of a dime might be enough for the mouse to gain entry), then the mouse will return unless you either kill it or drive it some distance away to release it.

For what it's worth, they make a bitter apple spray specifically to keep your pets from chewing things (tastes bad to them), I bet it would work with rodents too.

bapu
It seems that rats are adverse to moth balls. 

Have you ever smelled moth balls??? 
 
 
 
 
 
 
 
 
 
 
 
(How did you get their little legs apart?)