you scratch the wax away the little pieces end up falling in between the carpet fibers and these cannot be picked up with your fingers. so vacuum it all up!
after you have got as much wax out of the carpet as possible the next step is to melt the remaining wax back into liquid form. this will make it easier to remove.
place a paper bag over the wax and then set your iron to the lowest possible settings and make sure the steam setting is turned off, then place it on top of the paper bag. don’t leave the iron on the wax for too long. stay with the iron, 