I hate watching videos. Blow out as much as you can. Do you have a syringe? If so, you can syringe a lot of the liquid out. It's really hard to get a taste out of a carto. If you do have a syringe, try forcing very hot distilled water through it, followed by vodka. Blow out as much as you can and dry overnight. It doesn't work for older cartos for me, but haven't tried it on a new one.