Always follow the instructions on the tin when preparing a bottle for your baby. Sterilise bottles and teats and use cooled boiled water to make all formula. Just before a feed, measure out the relevant number of scoops and water and mix properly. Any leftover formula should be discarded. If you would like more information on how to prepare formula correctly or to talk through what your baby is experiencing, talk to one of our Careline team by using the LiveChat or call us on 1800 438 500 in Australia.