Yes the repellers should keep squirrels and other pests from creating more nests up there but you shouldn t leave the place open to pests and the elements.
Keep squirrels out of attics.
If you do notice squirrels in your chimney do not light a fire to try and smoke them out.
Trap squirrels using a one way cage door install a one way cage door outside the entry point you left so that you can catch the squirrels in a cage when they exit your attic.
When you find these entry points seal them off using wire or caulking.
Squirrels teeth never stop growing so they are constantly chewing on objects that can help shorten and sharpen them.
With any squirrel problem you should first do the things that help your situation.
Then you need to make the attic unattractive to them.
To fasten the sheet metal wrap wires around the trunk and.
Give the squirrels some incentive to leave.
You can also set up bright lights in your attic since squirrels prefer to nest in places that are dark.
First remove any bird feeders secure the garbage cans and cut the tree limbs back around the house so squirrels do not have easy access to the roof.
Not only is this inhumane but it can also be dangerous since a squirrel nest can block airflow and send smoke pouring back out through your fireplace.
Wires cables and wooden structures found in your attic make for excellent chew toys.
To get rid of squirrels in the attic try soaking a rag in ammonia and placing it in your attic which may force the squirrels to leave because of the strong smell.
Leave one opening so that the squirrels that are currently in your attic can leave.
Once in your attic squirrels can significantly damage the wires and cables in your home and destroy wood doors and window frames.
Once you ve managed to oust the squirrels from your attic you need to get to work shoring the place up.
Unfortunately you might have to learn how to get rid of squirrels in your attic by giving them a little push.
Prevent squirrels from climbing the tree by fastening a two foot band of sheet metal around the trunk six to eight feet above ground.