The answer, it turns out, is both yes and no. Cockroaches like light, but they also like dark, damp places where they can hide from predators and build their nests. If you see roaches in your home during the day, it's likely because they feel safe enough to come out into the open. However, that doesn't mean that you should leave all the lights on in your house; this will give them more places to hide. Instead, focus on sealing up any cracks and crevices where roaches might be able to sneak in and keep food sealed up. By taking these precautions, you can help to keep roaches at bay.