The AAP recommends a baby's nursery to between 40 and 60% humidity. This is the perfect addition to any nursery! The sound machine is great and so is the nightlight. It actually prevents you from needing to purchase more than one product because ti has the sound machine and nightlight all together. The best part is that it's SO EASY TO CLEAN. Top fill makes a huge difference. I have the original drop and I found this to be so much easier to fill and place on the basin.