I know mate, i've been at the maggies for a few weeks now but they aren't very territorial yet, only catching the odd one. My mate had his trap in what i'd class as a crap place and he's had about 24 to my 5/6 and he's had 2 cats and a tawny which were released unharmed . The maggies at work are pairing up now though.
Cheers, gnipper