Boveda packs are amazing. I used them the first time after this last grow. The herb stays just beautifully hydrated at the right level for maximum aroma and smooth smoking. I will never go without if I dont have to! I have heard you can regenerate them by putting them in a steamer basket wth very low heat. But dont quote me on that. I may just try using my dry and crusty ones at first jar up. Since the packs absorb or release moisture to try and keep it at 62% this may help dry out the stem in the jar and rquire less "burping" Will have to see to make sure. But oh boy are they awesome.