Bmaker, firstly welcome.
I'm not sure, but have you considered smoking them out, not necessarily anything toxic, but critters will usually back away from most smoke.

That's how I got the mice out my garage.
I didn't even realise they were there 'til I started the truck on full choke one day.
They soon got out!
Come to think of it.... so did I!(Fumes!)

Better still, once you get rid of them is it possible to stop them getting in in the first place?

Last edited by jockbolter50; 05/03/2010 10:58 PM.

1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.