The more the merrier I say! These 4oz wool balls are larger and denser that your average store bought wool laundry balls. !005 organic naturally bleach wool from New Zealand, these wool laundry balls will never go bad. Over time they will become deser and harder increasing their effeciency in shortening your dry times and saving you from toxic synthetic endocrine disrupting dryer sheets. Ditch the toxic mess and go to a natural, energy efficient, feel good, holistic way of performing the never ceasing task of laundry!