Here are a few tips to help keep the bugs out:
1. Make sure all bushes and trees are cut away from the home. (These are perfect places for pests hide. They will use the bushes and trees as bridges onto your home.)
2. Make sure you have screens on your windows, and they are in good repair. (Screens don't work very well to keep out most pests, but they will keep out the flying insects.)
3. Check door sweeps. (Just a small crack under the door is like leaving the door completely open for pests.)
4. Clean out those window wells. (Dirty window wells create a perfect environment for pests.)
There are many more ways to keep pests out of your home.