jan jan,
ha, for me, i'm using 3 methods:
1) at home, i boil my bottles, after off gas, i'll put in my breast pump when the water is still hot. After each use, i put back the bottles and pump into the water. I boil only once a day since my bb 3 mths old till now.
2) I also use steamer at home to sterilise those glass bottles coz scare the glass bottles will crack if i boil it, anyway i can't put so many things in the boiling water and the steamer is perfect for 8 glass bottles which i can steam 1 time everyday at one go and use for whole day.
3) at office, i use tablet for my pump coz very convenient, after use just put my pump back to the sterilise water.
The reason why i didn't use steamer for my pump at home is, if use steamer got to steam every time after i pump, very troublesome. The reason why I didn't use tablet is i don't like the chlorine smell, i only use it at office whereby no choice.
Before i use the bottles/ pump, i'll shake hard to shake off the water, but there'll be some water left behind which i think is ok.