Question
How do I keep squirrels from coming on my house roof via electric wires from the road
I have tried everithing including cutting down trees close to house
I am thinking of some sort of electrified fencing wire along the roof, if this is possible and any suggestion on what to use and how to install it.

Thanks
Ray

Answer
First, you need to determine if the squirrels are living in your house. I suspect they are.
Second NEVER, NEVER, NEVER, approach electrical lines. Leave that to electrical professionals.
third, if the squirrels have been removed from your home (if they are there details on how to to that at http://icwdm.org) then you can have the power company install a critter guard  http://www.critterguard.org/   trimming tree branches (that aren't near power lines) is recommended as the http://icwdm.org site suggests.

Forget the electrical repellent idea.

Note, I don't make any money on referencing Critter guard.