My review? Well honestly I’m still on the fence... I give the concept of his product, the ease of ordering, the shipping speed - 5 stars. But performance? My son gets strongly foul odored gas after having this. Does that mean it’s working? Is this just the uncomfortable adjustment period? The ‘good bacteria’ making space and kicking out some ‘bad guys’? Or does this just mean perhaps this product isn’t for everybaby? Not sure..can’t find this info on website in FAQ