Adhesive labels and insulated mugs: hidden risks for your dishwasher and your drinks
Jars or containers that still carry adhesive labels should not go in the dishwasher. Heat and water loosen the glue, leaving sticky residue on other items and, more critically, potentially clogging the dishwasher’s filter.
Insulated travel mugs and thermoses carry a structural risk: the excessive heat of a dishwasher cycle can damage the vacuum seal that keeps drinks hot or cold. Once that seal is compromised, the mug loses its insulating properties. Hand washing is the safest option for preserving both the seal and the appliance’s performance.
Following these care habits protects both individual items and the dishwasher itself — keeping knives sharp, cast iron rust-free, nonstick surfaces intact, and the appliance’s filter clear of sticky residue.
