This has been a sleep saver for my wife and I. We use it every night to help keep our little baby girl from hearing our cat's meows among many other things. I'm not sure that I can say it always makes her calm, and there have not been nights where we haven't used it, so it's hard to say what its real effect has been. I'm happy with it, but just wish it was a lot cheaper.
Rating:
[5 of 5 Stars!]