My summers are humid and my winters are dry. Which Boveda formula should I use (B49 or B49HA)?
In this situation, we recommend using B49 Standard packets year-round. (B49HA (High Absorbency) packets are only recommended for year-round high-humidity climates.)
In extreme climates (below 40% humidity or above 60% humidity), you can add more Boveda to your case. Extra Boveda Holders are available here.