Filament Dehumidifier

I live in a relatively high humidity climate. Typically stays between 50-65% RH indoors.

I’ve been having these in these Rubbermaid DIY dry boxes for roughly 3 months now and they haven’t gone above 10%

I print directly from them so there is not much opening of the top. Only when I change filament if the end falls in and I can’t grab it when I unscrew the cap

Not sure what the difference is, but these boxes seem to seal really well