How long do they run before you need to replace the batteries?It won't hurt if you try it... after some time of good circulation you will other notice a difference or not. Some people will disagree since they like to stick to their old ways. They're scared of change.
Either way... lay one of these on either the far right or far left of the wineador and it will circulate humidity properly so it's the same on top as it is below. And they're cheap...
https://www.amazon.com/gp/aw/d/B0006IX7TW/ref=mp_s_a_1_1?ie=UTF8&qid=1485659786&sr=8-1&pi=AC_SX236_SY340_QL65&keywords=rv fridge fan&dpPl=1&dpID=41eK8B6bBqL&ref=plSrch