The first place for preventing and treating worms (or any other disease) is always a healthy immune system. A dog or cat with a strong, healthy immune system is less likely to be an attractive host for any kind of parasite. This always starts with a species appropriate diet.
Many our our pets to end up with intestinal worms occasionally, but if your dog or cat is healthy with a strong immune system, they probably won’t make him sick.
If you see small white squiggly worms in your pets stool or if our dog scoots or licks his rear more often than normal and your pet is losing weight and is more listless, with possible vomiting or loose stools, Then you need a natural de-wormer.