Seeing a fleeing cockroach from afar is bad enough, but often they're up close and personal and we don't know it until they emerge. They can jump out from behind books on shelves, from underneath or inside of electronics and light fixtures, and from on top of knick-knacks and candles. They like to blend in with decor, and unfortunately, these items are things we touch and dust and move around with our hands. Cockroaches like the backsides of mounted and freestanding picture frames and mirrors too, but we think, by now, you get the picture: They can hide almost anywhere!
Keeping areas as clean and clutter-free as possible goes a long way toward routing out the hiders though, and with persistence and prevention, they -- and their little eggs too -- can be eliminated.