1) put a drop of dish washing detergent into a clean bowl of warm water. Stir to mix.
2) put the bottles that u wana wash, into this bowl of warm soap water.
3) use brush to start cleaning the bottles from inside out, with this warm soapy water.
4) use soft sponger to clean the teats and the screws.
5) pour away the soapy water, and rinse the bottles under the running tap to wash away the soap
6) put the clean bottles into the steam steriliser to sterilise.