Cleaning a 4-bedroom, 3-bathroom house involves a thorough approach to ensure every room is spotless. Dust all surfaces, including furniture, shelves, and light fixtures. Vacuum carpets and mop hard floors. Clean windows and mirrors for a streak-free shine. In the bathrooms, scrub toilets, sinks, showers, and tubs, and wipe down counters and fixtures. In the kitchen, clean appliances, countertops, and sinks, and empty the trash. Finish by vacuuming and mopping high-traffic areas to leave the entire house fresh and clean.