The white part of the droppings is called "urates" This is completely normal for most reptiles. If the urates is hard like a rock when expelled, then the animal probably needs more water, humidity or soaking.
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2.1 Albino BP
0.4 100% Het Albino
2.1 100% het Caramel Albino BP
1.0 100% Het Clown
1.0 50% het clown
2.12 Normal BP
0.0.1 Western Hognose
alot of cornsnakes
0.1.0 Dumeril Boa
3.6 Bearded Dragons
1.0.1 Sulcatta tortoise
2.0 Russian Tortoise
1.0 Cockatiel
0.1 Rottweiler
0.2 Boston Terriers
0.1 White Boxer
0.1 Paint Mare
bunch of geckos
0.1 Teenage daughter
1.0 Husband who puts up with all my critters.