I can't remember the source references, so I can't say anything for certain, but I have read in several places that EASBs live in high humidity micro-climates. As you probably know, they are sand dwelling desert creatures. They are known to live in areas that are low-moderate humidity, but are also said to spend their lives in small pockets with moderate-high humidity.
From personal experience, many of my EASBs have spent a large amount of time in humidity boxes and underneath hides that build up moisture.