Scald it with boiling water if the suction cup is flap, it’s OK after cooling. (Be careful not to squeeze the suction cup during the cooling process).Suction cups can only be attached to smooth surfaces, such as smooth tiles, stainless steel surfaces, smooth plastic materials, smooth appliances, etc., not for rough surfaces.

DOUBLE BRUSH: The cup brush with double sided bristle brush, 360 degree no dead angle cleaning, makes cleaning your glassware a breeze. Just make sure you rotate cups clockwise on center brush as going counter clockwise will unscrew the center brush

QUALITY & DURABLE BRISTLES: Glass cleaning brush is made of PP+PVC material, flexible bristles, moderate hardness to ensure remove stubborn dirt and longer life.

SUCKERS: There is three big suction cups at the brush bottom, Suction grip base firmly attaches to the wall table or or attaches to the bottom of sink.

REMOVABLE & EASY TO CLEAN, FAMILY ESSENTIAL BRUSH：Creative lazy rotating cup brush can be removed and cleaned. This brush is thick and can clean all kinds of glassware, such as baby bottle, sports bottles, wine cups,coffee cups, beer players, vases or coffee pots, pitchers. Perfect cleaning tools for bar kitchen.