Sergeant’s Natural Pet Products Allegedly Contain Toxic Oils

Perrigo unit Sergeant’s Pet Care Products, Inc. deceptively touts a line of “natural” flea and tick repellants as safe for pets because they contain toxic essential oils that can sicken and even kill them, a new class complaint alleges.

Sentry Natural Defense products are marketed as “safe to use around children and pets” and “Veterinarian Tested” to attract high-end consumers looking for holistic or natural treatments, the suit filed Nov. 15 alleges.

But the products, meant to be applied to the skin of dogs and other pets, expose the animals to concentrated peppermint, cinnamon, lemongrass, clove, and thyme oils, the ...