We're Under Attack!

I'm not sure about squirrels, but TOMCAT mice killer is top notch for rats and mice. I used just 2 of the green food bars broken up around their "areas" and within a few days, they were gonners.
I tried bleach and water mix sprayed, vinegar sprayed and mothballs during a 2 month timeframe with no effects. I only resorted to killing them when they raided a bird nest in my shop and ate 2 baby birds.