Seriously, I was intimidated about filling my own cartos when I started last year. When I got a sample of
juice, I decided to try it. I've used a condom, dripped, and syringed. (This just sounds wrong huh?) LOL. It really doesn't matter which method you use. The key is to make sure you get
juice all through the filler and keep it moist. Honestly, all the methods work. Try whatever you're most comfortable with. There's no wrong way other than NOT getting the filler wet enough, or leaving a puddle on top of the filler. As long as it's thoroughly slushy, you're fine.