What is bottle brush used for?

A bottle brush is primarily used for cleaning narrow-necked containers, such as bottles, jars, and vases. Its long handle and bristled head allow it to reach difficult areas, effectively removing residue and grime. Bottle brushes are often made from materials that are safe for various surfaces, making them versatile for both kitchen and household cleaning tasks. Additionally, they can be used for cleaning other items, like baby bottle nipples and straws.