Instruct: Classify the given Amazon review into its appropriate rating category
Query: Do not sterilize in microwave....

Ok, so these lasted 1 day and 0 uses.... My husband put them in the microwave sterilizer..... :O Obviously... They melted being that they have metal in them .. Do not stick them in the microwave sterilizer....... Lack of sleep..... Has you doing dumb stuff! We ordered another set and they are working aok!