Cleaning baby bottles is such a pain in the bum.  It's been 6 months now and I swear this must be the most boring job in the world.  I do the cleaning twice a day (once midday and once at night before sleeping) so that milk bottles are ready for my babies' next feeding, and so that pumping parts are ready for the next pumping. Here's a short video I've made on how I clean the baby bottles , how I sterilize bottles and bottle parts , and how I use the dishwasher to clean them - which is my most preferred method, because with twins there are so many bottles and so much less work to do when there's a dishwasher doing it for you.