Do I still need to sterilise bottles?

[Autumn13]

DD is 9 months old now and will only have 2-3 bottles a day (not even full ones). Do I still need to sterilise them?

You're supposed to sterilise while you're still giving infant formula due to bacteria in the formula powder

I just put them through the dishwasher at that stage (or a good hot wash and air dry if no dishwasher)

Yeah, I do put them in the dishwasher every wash.

As long as I use formula I sterilise.

The NHS says for at least 12 months.

When I had my first it was a year. When I had my second or third they changed it to 6 months but it's now back to 12 months.

Breastmilk - no

Cows' milk - no

Formula - yes

Yes.