I spray mine unless it is rolly enough just to dump (unfortunately, rarely for us). My ds poops about 5 times per day and sometimes I get sooooo sick of dealing with it.
Anyway, when he was ebf I just dumped it all in, I never had stains, I didn't rinse until he started solids.
I usually rinse right away, but if not, I just stick it on the diaper pail for my next trip to the bathroom. (I keep the pail in the bathroom since he started solids.)