When I lived in Illinois, a good friend of mine had a family of Raccons living in her attic. They were able to get into the home through a vent located on the exterior of the house.... Eventually her livingroom ceiling caved in from all their fecal matter.....I never forgot this, so whenever I hear a noise in my attic it freaks me out...
I had Raccoons living under my wooden deck. I had Coyotes regularly visiting my backyard. To rid the little critters I installed motion lights all around my house to scare them off. The motion lights are great for security to scare off any unwanted guests...
Here in Texas we don't have basements. We do have a lot of attic space for storage ...Every once in awhile I can hear little weird sounds in the attic. My Exterminator has checked the attic several times and said that we might have a bird up there even though he couldn't actually see anything...
The other day I saw a mouse run across my patio !! So now I'm paranoid...
For the past year I have been collecting socks...Yes Socks....They are all the socks without a matching sock. So far I have a full laundry basket full. I feel that if I throw them away it's a huge waste. So I have come up with a plan !!
I'm going to make a bunch of stink bombs with my unwanted socks !! Years ago I read that if you have rodents in your attic, take a Tube Sock and fill it with a filler (like more socks) dip the Tube sock in Ammonia and launch the socks around your attic.... it will deter critters from living in your attic.
The following is a website that offers great tips to eliminating pests...
http://alleyspc.com/wildlife.htm