The way you're trapping, even If you do catch a lactating sow, you won't know if it's the right one. Catch her in a positive set at the entry in a cage. If you still can't find the pups, you still have the option of releasing her. If you harass her enough in the cage before release, there's a better than avg chance that she will go back in and remove the pups herself.
That tactic has worked for me 7 out of the last 9 times.
Thanks. I am trying to figure a way to do that. The entry/exit has been a few different places in the soffit. The soffit is not your typical area where a roof and dormer meet. This one is right under the eaves.
Not sure how I could hang my comstock there. In the attic, I'm afraid it will get too hot and she may die quickly.
My next tactic is to go and harass her in the attic and hopefully she will leave. I have put out a bunch of eviction fluid throughout the attic.
This is a tough case.