“Our 9 month old F1b Pyredoodle takes Credelio like a champ. They are like treats to her. She has been on these since her first puppy check-up at 8 weeks old and we have never had an issue with her getting sick from the pills. She has also never had a flea or tick so the pills are defiantly doing what they are suppose to. That being said, we do not live in a particularly insect dense environment. We are in the desert and she is inside most of the day.”