I have a home with a red tile roof. the large oval kind. The squirrels are going under the tile & eating thru?

I don't know how to stop them. This a 3 story so going on the roof is difficult. I have several holes that have already leaked into the drywall HELP!!!!!!!!!!I have a home with a red tile roof. the large oval kind. The squirrels are going under the tile %26amp; eating thru?
Hire a contractor to come out and put in some very thick metal/steel screening in.This will keep the squirrels out and allow proper ventilation through the roof.

eye concealer