Don't like gut-loading insects, or want to be certain every vitamin need is met? Use R-Zilla spray-on vitamin supplement. It's as easy as a daily misting of a pet's food supply, then waiting fifteen seconds before serving. This mist contains vitamins C, B1, B2, B6, B12, D3, niacin and folic acid. Vitamin A is included in the form of beta carotene, a natural plant-based supplement that allows your pet to absorb only the amount of the antioxidant it needs.