There are several sites which sell small animal traps.  Here is a link to
a list of several sites:
 
http://www.blueglobus.com/cgi-bin/search/search.cgi?results
&keywords=Havahart&page=1&descrip=0&perpage
 
Also, have you asked animal control or wildlife rescue people if they
have one they would let you borrow?
 
As much as I love rats, it's not safe to have wild rats in the house.
Good luck with your quest!
 
Arlene
[Posted in FML issue 4485]