possibly not bitter but it has altered the taste of the cigars.

To me the glycol gives me a slightly bitter after taste. My mistake was slathering the insides of the humidor with activator(not 50/50) and putting my sitcks right back in because RH was around 40%. After much frustration over the next few weeks I realized(when I did the salt test) the hygrometer had become defective.

Every cigar that was in that box has the same distinct "flavor" the ones that never touched the sides/bottom hwoever MUCH less that the others.