Hartz Natures Selection. Labrador retriever in grass.

Nature's Shield

An alternative to synthetic pesticides, Nature’s Shield contains a blend of natural, essential oils that aid in the prevention and control of fleas and ticks.

Our naturally-derived home and on-pet sprays contain gentle and safe ingredients, like lemongrass and cedarwood, which treat parasitic pests externally without the risk of exposing your pets or family to chemicals.

Made from
Plant Based Ingredients

Cedarwood oil is derived from the needles, leaves, bark and berries of cedar trees. Similarly, lemongrass oil is extracted from the leaves and stalks of the tropical, grassy lemongrass plant.Hartz Nature's Selection is made with plant based ingredients.

Both herbal substances are a natural insect repellent, and have been proven to be lethal to fleas, flea eggs, flea larvae and ticks due to their ability to disrupt the insects’ nervous system function.


When fleas and ticks are exposed to the cedarwood oil extracts in Hartz Nature’s Shield, pheromones are disrupted which disorient the insect and interfere with fundamental processes like breathing which can ultimately kill the insect.

Lemongrass contains a high concentration of the chemical component citral which increases the pesticidal activity of the formulation. The formulation also kills flea eggs and larvae to put an end to an active infestation. The lingering scent of the botanical oils then work to act as a barrier of entry to newly arriving fleas and ticks.

Featured Products

Hartz Nature’s Shield Flea and Tick Home Spray

Both a treatment and a preventative, Hartz Nature’s Shield Home Spray incorporates plant-based ingredients to...

Hartz Natures Shield Flea and Tick Dog Spray

Both a treatment and a preventative, Hartz Nature’s Shield Home Spray incorporates plant-based ingredients to...

Learning Center

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Responsible pet owners do everything they can to minimize any risks associated with fleas, but one place people may overlook is outdoor garbage cans in the neighborhood or backyard.
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How to Remove a Tick

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If you notice your calm, friendly pup is suddenly meaner and easily agitated, she could be suffering from Lyme disease. 
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