Squirrel Control Techniques | DoItYourself.com
Squirrels with Babies in the Attic
It is best to wait to evict squirrels with babies until the infants are grown and gone. Usually all squirrels leave the natal area 12-14 weeks after being born for territorial reasons. Sometimes, one may stay behind, and then eviction techniques may be used. If you really need them out immediately, then you will want to get the mother to move the babies on her own.
Go into the attic and locate the nest during mid-morning.
Very gently tamper with the nest. Try pulling off the top of the nest and if possible slide the nest over a foot or so. But, remember to be very gentle, babies are quite fragile.
Place a radio, tuned to an all talk station, about 6' from the nest.
Roll rags into a tight ball and tie with twine. Soak rag balls in ammonia until saturated and toss them into the vicinity of the squirrels' nest.
Check the nest the following morning. If the babies are gone, you can usually block the entries. First, make sure the mother didn't move the babies to another part of the attic. The radio usually prevents this.
If the mother has or knows of an alternate nest site, she will usually move her young within an hour or so. If she has to find or build a new nest, it may take 5 or 6 hours.
Note: In the winter, it is harder for the squirrel to find new nesting material. Tree leaves that the squirrel uses to construct a new nest have fallen from the trees. The squirrel may have to improvise to find a new home. This may be sheds or barns, non-running cars or trucks, covered porches, patios or a neighbor's attic.