When should I change new milk bottle and teat?

Hi, Change the bottles after 4 to 6 months. And if you use BPA bottles, make sure you disease them after 6 months or as mentioned on the cover. And if you use non-BPA bottles then change it every three months. Apart from this, if you see any leaks or chip,c change it immediately. Discolouration of the bottle is another sign. And if you use glass bottle then check it very closely as a little chip or scratch can be hazardous. And as far as teat is concerned change it every one to two months.

Hi you should change ways every 6 months. For bottles if you use PPSU bottles those can last one year. If you use PP bottles those need to be changed every 6 months as well

Using avent. Only change the teat every 6months. Bottle 1 yr.