Bests & Worsts Reviews from Amazon

I used these a few times. 30% of the time they worked- you hear the whistle and some poop comes out. But when I mentioned to my pediatrician that I used them she told me to stop. She said you could accidently hurt your baby badly using these-- and thinks they should be banned. Babies will learn in time how to poop and fart on their own. Helping by artificial means delays that process.