I hate that you can never seem to get outers and inners to both go out at the same time. I also hate when I forget that I need inners, not outers and buy more outers.
In a perfect world we’d run out of both at the same time. I have a pack or so of Mofi inners that only go in ones I want to keep completely safe/after getting a cleaning. I never seem to run out of outers because the majority of the ones I get, have them already.
buy two packs of each when you start. when one pack runs out buy another. you can start eating into the second pack if you procrastinate a little or have na overrun for some reason but it takes a very long time to actually be out. Don't wanna buy two packs? Just separate your pack into two to achieve the same effect.