The mulching ratio of garden vacuum cleaners and blowers indicates how many times the collected material is reduced during mulching. For example, a mulching ratio of 10:1 means that the original volume of leaves or garden waste is reduced by a factor of 10. A higher mulching ratio means the material is processed more efficiently, making it easier to compost or dispose of. This parameter is important for users who want to minimise the volume of waste and make the most of the space in the garden vacuum cleaner hopper.