If you use amber lighting outside, it will keep insects away. Crevices, cracks and joints are normally hiding places of roaches and a number of other little pests. Caulking them is a good idea. Cleanliness also plays a major part in keeping your home pest free. As your Houston pest control service will point out, many pests are so minute that they can live on the tiniest of crumbs. And while you keep the indoors clean, do not neglect the outdoors. Piles of leaves and other rubbish in your backyard form excellent nesting and hiding places for a wide variety of rodents and insects. It is vital that you clear this away at regular intervals.