I've heard that too Janet, but I've also read that they are very happy in S/H also lol.
I've been waiting and waiting in the hope of a clear set of rules to follow, but it appears that everyone has different results, so I've just thought I should stop dithering and do it, because I've been itching to for so long
So far so good with moisture levels, the top balls are dry but underneath they feel moist. Hopefully this will continue.