Caulk it, they will chew a small crack bigger and you will have totally wasted every single day, believe me, been there.djei5,
I could not get it to seal totally, but I did watch them for quite some time and it did not appear they could get through. I may put some caulk around the edge.
You are correct djei5. They found a couple of ways around plus another entrance a foot down the wall. I caulked all today. When I left they were all using the entrance I put in. I will check in a couple of days to see if any others exist.Caulk it, they will chew a small crack bigger and you will have totally wasted every single day, believe me, been there.
I did use silicone. The house is brown wood and I needed it to match so I had to. Sounds like a good call.If you used painters latex caulk, they will chew it up and spit it out. I'm finishing a trap-out now and didn't know this to begin with. I changed to silicone caulk and it seemed to keep them in. I wish someone had posted that before I started my trap-out and it would have saved me a lot of time patching holes. Good luck. It just takes time and patience.