Yes, we have MoMo, the monkey sleep training clock. Our 4.5 yr old and nearly 3 yr old share a bedroom and were getting up earlier and earlier. First it was 5:30, then 5, then 4:40, racing down to our room and jumping into bed with us. We had DD in May and decided that we didn't need the boys waking us all up that early. At first I wasn't sure if it would work or not, but both boys now stay in their room and in their beds til MoMo opens his eyes. most of the time. I bought it online and it's the best money we've spent.