Can you use the Up&Up (target) liners w/ the platex drop-ins? I just bought a drop-ins starter kit to try out w/ DDs and both seem to do well with them.
Also, sorry if a dumb Q, but do you premix your formula before putting into the liners or do you mix directly?
I'm traveling soon w/ DDs and want to have as little hassle as poss. with bottles!