Before the first use, for more hygiene, put the whole parts of the feeding-bottle (unscrewed bodies and bottom), the teat and all the accessories in boiling water and let them boil for 5 minutes.
Before each use, wash the teat with hands. Have a close look at the teat and pull it in all directions. Throw the teat away at the first sign of damage or brittleness.
Indication: Mixed feeding, weaning of the infant.