One of the biggest annoyances dealing with bottle feeding is washing bottles. With many small parts & pieces thoroughly washing a bottle can take a few minutes per bottle. For a sleep-deprived parent, any tool to make this easier and more efficient is a huge help. The Munchkin Bottle Brush is the best option I found. The suction cup bottom keeps the brush from ending up in yucky dirty water in the sink. There is also a non-slip handle to keep it from slipping while washing. Lots of tiny bristles around the sides & top help scrub the bottle with virtually no strength. They have even added a smaller nipple washing brush in the base to get into all the small parts where the regular brush cannot.