I am not nearly as organized about soaking as Brian, but I do soak them. I have an adult mali and a juvenile Egyptian, and I soak them both (seperately)when I think about it, or when it has been particularly hot and dry. They don't overly enjoy it, but I do think it is good for them, and if they are getting ready to shed it can assist with that process a bit too.
It seems from prior discussions that different types of Uro have different soaking needs too. Some of them seem more likely to actually drink while soaking. I have never witnessed this but I think it was macfads, or somalians, or something along those lines that have a propensity for it.
Elizabeth
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1.0 Mali Uro Archimedes
0.0.1 Egyptian Uro Zuberi Mosca Khu (Mosca)
0.0 Fish
0.1 Sulcata Minnie
1.1 Iguanas Flik and Loki
0.1 Newfoundland Jasmine (RIP)
0.1 Feline Winter
Indiana & Wisconsin