Unger The Pill Glass Cleaner, 10 Pills, Composition: 70 to 82% Sodium bicarbonate, 15 to 25% Citric acid, 1,5 to 2% Sodium lauryl sulfoacetate, 1 to 2% Polyethylene glycol, 0,15% Magnesium stearate, 0,25 % FDC Blue No. 1, Solid Form, Blue, pH Value: 7 to 7.5 Removes dirt, grease and residue on glass and prevents spots that can be left after drying Biodegradable, skin-friendly and non-toxic Pre-measured: mix one pill with 2-1/2 gal of water Glass cleaner mixed solution (pill + water) will freeze, store above 32 deg F to prevent freezing