The condom method is simply the most straightforward way to fill a carto. I take both condoms off, remove the top plug. Fill the larger condom about 85% full. I insert the threaded end into the condom full of juice. I hold my finger over the top and push down all the way. I usually let this sit for about 3-5 minutes. I take the condom off and fill about halfway. I flip the carto over and insert the top into the condom. I let it sit again for a few min. I pull it off, blow out the center, wipe it down and there ya go. Should take less than 10 minutes, probably 5 if you're in a hurry. Never fails.