This has been so helpful for us and the sleep issues we were having with our 3.5 year old. Our main issue was our daughter waking up extremely early and coming into our bedroom and refusing go back to her room. She now stays in her room until puppies light turns green! We like the different settings and use two different settings for the weekdays and weekends so we can get some extra sleep. We also have her trained to use the toilet herself in the morning so she will do so and then go back to bed until the light turns green! It worked the first night we used it and has worked every day since! We also notice she has had less accidents in her pull ups since using this system! Highly recommend [This review was collected as part of a promotion.]