Definitely dogs are your best protection, they hate dogs. We had house dogs, but then only went out into kennel off our back porch to go potty and then back in the house. Since we got our LGD (livestock guardian dog) we haven't lost anything. Before that, the fox got several ducklings, some adult muscovy hens that had their wings clipped before we got them and was out in our backyard several mornings a week trying to catch breakfast! Since Remi arrived, no casualties and no more fox sightings. We had a den close, because by last summer the "pups" were out in the field playing and learning to hunt. Now they have moved on, thankfully!