Posted: Tue Mar 21, 2006 8:35 pm
They won't harm your turtles (I doubt the mfgrs would sell a product that they could be found liable for).
That said, they won't protect against salmonella, and the form of calcium they contain isn't even one that's really useable by your turtles. Also, many of them contain sulfa, which is really a drug, long term use of which will build resistance to it (just like when people use antibacterial products all the time). I'd put my money into something else rather than products like those.
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-