It can be hard to reach inside a narrow bottle with a sponge; instead try a bottle brush. The 360° bristles are specially shaped to fit inside bottles, jars, cups and bowls so you can scrub every inside edge with ease.
Regular Bristles + Wood Handle: This brush can fit in small spaces and is ideal for narrow bottle necks, water bottles, and baby bottles. The wood handle is made from moso bamboo, and the bristles are sisal, derived from agave. 360° bristles ensure that every corner is cleaned.
Large Bristles + Cotton Tip: This brush has large bristles, great for cleaning out pitchers, growlers, and other large bottles. The bristles are sisal, with cotton fibers at the end. 360° bristles ensure that every corner is cleaned.
Do not place in dishwasher. Rinse soap and food residue out of bristles after each use. Let brush air dry between uses by hanging on a loop or standing up to preserve the wood.
To disinfect: Submerge brush (head only) in 1:1 hot water + vinegar for 10 minutes.