you have to do two things to cartos to get them with that "oh so fresh" feeling
the best is to use the squeeze bulb trick. it's the lil blue squeeze thing you suck snot from babies noses or i think they use them for ears also.
chop off enough of the pointy part to be able to fit it into either the opening of your atty (for 808/901) or enough for the threads of a 510 to fit into.
suck up water into the rest of the bulb and fit it onto the cart. squirt, fill, squirt, fill, squirt fill. till there is no trace of smell or color.
with a 510 you can usually fit the thing into the opening also if you cut it right.. do that way also.
once done you can boil if you want, i don't as cartos have a paper with glue on them most times.
after the cleaning stage, you can blow the carto out with the bulb facing it open ended down.
then hold the thread end and whip it at the ground like your trying to fling out the water at the floor.
to dry, i put mine where hot air will be blowing on it, like the side of my pc that spits out crazy heat or behind my xbox while its on.
if you want you can even throw them in the back of a car window and let the sun bake them dry.
boiling isn't really needed.