In my cooler I wiped the inside with DW, then each drawer/ shelf with a sponge dampened with DW letting them dry then installing into the cooler. I then used a small container with DW in the bottom, turned it on let it sit until RH stablilized. I added two 65% Bovedas on each shelf or drawer. Once RH was where I wanted I added the cigars. after two weeks I took out the DW and have only used Bovedas since. Mine is a Whytner cigar cooler and thatís very similar to what thay directed.
It works great!
Coolers are completely different than a Wooden Humidor.
US Army Veteran 1974-1985