Bugs like a nice home for the same basic reasons you do. They want food, water, and shelter. If they can find these in your house, they'll move in. Common bugs found in the home are earwigs, vinegar flies, drain flies, cockroaches, silverfish, house centipedes, firebrats, spiders, and ants. Pet owners sometimes have to deal with fleas in the house. These pests may show up at different times of the year, and are more of a problem in some regions more than others.