When they get up in your overhead they are a pain. I set about 10 Victor rat traps to deter. I had a plastic type net that was my vent for the soffit. Bastards chewed right through. It took several weeks to get that M/F. I had 3 big traps on the ground. I got 3 fricken cats. All were my Neighbors. One night I heard the Rat trap snap. I ran out and caught it on the top of the Privacy fence. I took my Dads old aluminum crutch and brained that sucker. He became fertilizer for my front citrus trees. I don't mind them living in my area, just not my house!