Tips to maintain your baby's bottle:
After every use, make sure to wash the bottle with warm water.
Make sure to thoroughly rinse all utensils under running water to wash away all traces of soapy water.

Use a clean and soft cloth to wipe or dry the bottle.
Use a nipple brush to wash nipples and nipple holes.;
Squeeze the hot, soapy water through the nipple hole to flush out any trapped milk.
Use only sanitized tongs to remove bottles, nipples and other utensils and place them in the dish drainer to dry.