As Bob has already said an ultrasonic to remove any grease and grime from the inside or more time consuming and probably less practical a soft toothbrush and washing up liquid if you don’t want to buy an ultrasonic.
As Bob has already said an ultrasonic to remove any grease and grime from the inside or more time consuming and probably less practical a soft toothbrush and washing up liquid if you don’t want to buy an ultrasonic.
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