(6)In order to ensure legal certainty and a level playing field for economic operators, the existing definition of ‘detergent’ should be extended to cover the newly developed detergents containing intentionally added micro-organisms. That definition should also cover products that support the cleaning process when used together with a laundry detergent or an automatic dishwasher detergent, as well as products modifying the odour of fabrics, given the ancillary role those products have for fulfilling the cleaning function. References to surfaces include the surface of fruits and vegetables.