You can add the cleaning solution you want to refillable bottle for floor cleaning .Note: This replacement bottle is only for CLDREAM (Grey and Blue) microfiber spray mops . | The capacity of the refillable bottle is 800ML，Which provides ample solution storage for cleaning floors .You can use multiple refillable bottles to fill cleaning solutions for different floor. | Each bottle contains a gasket, which provides a seal for the bottle and prevents the spray mop from leaking during use. | When the mop isn’t in use, please don’t put the cleaning solution in the bottle to prevent the cleaning solution from corroding the spray device.