I’m of the general opinion that the hullabaloo about drying filament is largely not warranted in most cases. PLA is just not very hygroscopic and can sit out for months without any issues. Even PETG I don’t have any issues with it sitting out. The room I print in sits at about 50% humidity most of the time.

I keep most of my filaments in a box with dessicant that I bake maybe once a year, but I’m not convinced it is really doing much. The only reason I have a drier is that I started printing occasionally with materials that are much more hygroscopic (e.g. TPU).