theres so many different types Katie, im only just vagely getting to grips, still so much to learn and trial and error will prob play a huge part, the ones im going for are AIO all in one with poppers, and you use inserts, u change the inserts and the nappy too when needs washing, sienna doesnt get sloppy poo unless shes ill, and i stopped growing up milk a long long time ago, shes on blue top and will be on semi by 2nd birthday. they didnt have growing up milk when chloe was a baby, so ive not used it on any of my others, same this time. get urself on the natural parenting section and read up ull soon be getting to grips with it. x