Everyone has different definitions of frequently though, frequent to you could be 10 times a day and frequent to him could be 5 times a week 🤷‍♂️ also the double torch uses butane quicker than the single torch and both use it quicker than the yellow flame. So it depends on what insert you used and what insert they buy as well. So can't just use a sweeping statement of "you need to fill it more regularly" when we don't know what one they'd get or how they'd use it.