Exclusion should help reduce the hibernating populationNever saw any of them that we relocated last year return...and least none of them that I painted came back. Not sure how far they migrate but the first dozen or so I only moved about 1/2 mile away. After that they were taken a full mile away to our extreme north end. All the babies were taken further than that - not even close to our property.
The majority of them did come from under the concrete in our barn but after we caught what we thought was all of them, I closed off those avenues of ingress/egress.