Net content: 12 pieces per box Features: Our washing machine cleaning effervescent tablets contain cocamidopropyl forbetaine, disodium EDTA and sodium bicarbonate. It can effectively forsterilize, quickly remove odors and keep fresh for a long time. Its usage is very simple: 1. Take 1-2 tablets of this product and put them into the washing machine; 2. Pause after filling water for 15 minutes and soak for 3 hours; 3. Finally, turn on the daily washing mode for cleaning. The powerful decontamination formula can easily dissolve the dirt in the washing machine and keep the washing machine clean as new. Product includes: 1 piece of washing machine cleaning effervescent tablet\2 pieces of washing machine cleaning effervescent tablet Note: Due to manual measurement, please allow slight size errors (1~2 cm/0.39~0.78 inches), which shall be subject to the actual receipt; there is a slight error in color under different monitors, please allow slight errors.