We recommend a fecal test every 6 months. What are we testing for and why do we seem so interested in your pet's poop? Well, we are looking for worm eggs and other microscopic parasites (hookworm, roundworm, whipworm, and coccidia to name a few). Most worms live attached to the intestinal lining and intermittently release microscopic eggs. So just becuase you don't "see" worms in your pet's stool doesn't mean they aren't there! Most importantly, there are parasites that people can get from their pets (hookworms and roundworms). We check the poo to ensure your cat or dog doesn't have intestinal parasites and to protect your family members from them as well. We also highly recommend giving your pet a monthly parasite control medication like Trifexis. It controls fleas, prevents heartworm AND deworms every month from common intestinal parasites.