I'm sure my DS's pee and poop sooooo much more than DD ever did. I am doing so much washing with them as they seem to pee and poop through everything, but I think is maybe more the fact that boys pee to the front of the nappy and therefore prone to a bit more leakage up the front and around the legs, where girls pee downwards so don't seem to have as much obvious leakage etc. One of the joys of raising boys I suppose lol...