You should wait until you can get a decent stool sample and then take it to a vet to have it checked for intestinal parasites. You can also check the inside of their mouths for flukes. I was able to successfully treat one of my Speckled Racers with Droncit. Also, check for mites, ticks, and subcutaneous (under the skin) worms. They usually show up as small odd-shaped bumps.