Dish drying rack and drip tray: clean gently and wipe dry
Empty the tray and wipe the rack and corners with a mild cleaner, then dry; always check the material-specific instructions.
IKEA's HULTARP rack includes a removable drip tray and its instructions call for a cloth dampened with mild cleaner followed by drying. VÄLVÅRDAD likewise recommends a gentle wipe-and-dry routine. Do not put the whole rack in a dishwasher unless expressly approved.