just started collecting my leaking milk while feeding yesterday and have already built up a small stash. when you feed baby on one side, attach the haakaa on the other and it catches what would be wasted in a beast pad!! it's amazing. so proud of this. in 3 wks or so we will introduce a bottle for dad to feed (waitinf to avoid nipple confusion). I don't need much of a stash as I'm a SAHM but it will be good for when dad wants to help at night or when I wanna run an errand without baby.