I'm after some help if possible please. I have three chocolate runners, they are approx two months old. They have been fine, and still act and eat, stretch, run and flap completely normally, they don't appear to have anything wrong with them except there paddling pool has hundreds of tiny white flakes floating on the surface and today the snuck inside the house and when they left, there was a lot more of these 'flakes' on the floor where they had been. It looks like dry flakey skin? In fact what it really looks like is white ash. I'm in the uk, so temperatures are pretty up and down but no extremes at all. Any ideas please people? Many thanks, Thom.