Nature's Shield is plant-based flea and tick protection.

Nature's Shield

Nature’s Shield is an alternative to synthetic pesticides, containing a blend of natural, plant-based oils formulated into products that aid in the prevention and control of fleas, ticks, and mosquitoes.

Keep your pet and family safe from pesticides with Hartz Nature's Shield natural flea and tick products for dogs, cats and home.

Maximized Botanical Protection

Our Nature’s Shield line contains safe, effective, and naturally-derived ingredients, such as Lemongrass, Cedarwood, and Cinnamon oils. These oils contain active compounds that are toxic to fleas, ticks, and mosquitoes by contact. Utilizing plant-based alternatives helps limit your family’s and pet’s exposure to synthetic pesticides.

plant-based flea & tick protection

Made with
Plant-Based Ingredients

These plant-based oils serve as natural insect repellents that interfere with olfactory receptors in mosquitoes, and have been proven to be lethal to fleas, flea eggs, flea larvae and ticks due to their ability to disrupt nervous system function.

Nature's Shield is a natural insect repellent


Hartz Nature’s Shield products are formulated with unique combinations of essential oils that all differ in their mode of action against fleas, ticks, and mosquitoes.

Some of the active compounds present in the oils include cedrol, citral, citronellal, eugenol, geraniol, and cinnamaldehyde, which all increase the pesticidal activity of our formulations.

These compounds can disrupt pheromones, break down the target insect’s exoskeleton causing dehydration, and can interfere with their physiological and behavioral functions, leading to death.

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