Recently I purchased my 'dream' Taylor, an 814ce, and asked the dealer about humidification for the instrument. Because I live in Kentucky, humidification is a big deal and my 'old' guitar is almost always wet. Over the years I have tried about everything I could get my hands on short of a room solely for the purpose of leveling out humidity for the instrument. He recommended the D'Addario Two-Way Humidification System, which was new to me, so I followed his recommendation & purchased it. Their system claims to maintain levels between 45-50%... 'drying' out an instrument which is too wet and humidifying one which is dry. Sounded a little hard to believe, but I am very pleased to say it really seems to work!
When my father died in 1990 he owned 2 acoustics (both Fenders) and a few years after his passing my Mom sent his prized F-260s to me... I have proudly owned & played this acoustic since about '98. I will now purchase the D'Addario system to use with my Dad's Fender and recommend others looking for such a system to give it a try.