We recommend changing Pigeon teats every 2-3 months, taking into consideration how many you have in rotation. Change your baby bottle teats immediately if they're damaged, weak or have bite marks.
If your teats have discoloured it is likely that they have been in contact with high temperatures during washing and sterilising.
Kindly check the temperature for your electric steriliser that it doesn’t exceed 110 degrees celsius and discard discoloured teat.