How to clean nipple holes from baby bottles?

Question

How do I make sure nothing is stuck in there and that they’re clean all the way through?

Answer

I always put my finger into the inside of the nipple and push the water through the hole while I am washing.

Answer

I bought bottle brushes with nipple cleaners.

Answer

Boil them

Answer

I shove my finger up there sometimes. If not, I use a straw brush.

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