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Hartz Flea and Tick Drops for Cats and Kittens to be Cancelled


At EPA’s insistence, Hartz Mountain Corp. has agreed to cancel uses of several flea and tick products that may be associated with a range of adverse reactions, including hair loss, salivation, tremors, and numerous deaths in cats and kittens. In the short term, the agreement calls for new labeling of the products. The new labeling will state that the products of concern are not to be used on the most vulnerable animals, including cats and kittens that weigh less than 6 pounds, cats older than 13 years, or kittens less than 5 months old.

Through this agreement, Hartz will voluntarily stop all new production of these products by September 30, 2005 and will not sell or distribute any affected product after December 31, 2005. The company has agreed to a prohibition on sales down to the retail level by March 31, 2006.

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In November 2002, due to safety concerns stemming from use of certain flea and tick control products for cats and kittens, and based on an agreement with the agency, Hartz Mountain Corporation recovered, repackaged and re-labeled the available stock at that time to include stronger precautionary statements and use directions. The company also agreed to conduct a consumer education program and provide additional reporting about incidents.

Product Information

The products affected by this action include:

EPA Reg No 2596-148

Hartz® Advanced Care™ 4 in 1® Flea & Tick Drops Plus+ for Cats and Kittens
Hartz® Advanced Care™ Brand Flea and Tick Drops Plus+ for Cats and Kittens

EPA Reg. No. 2596-151 Hartz®

Advanced Care™ 3 in 1® Flea & Tick Drops for Cats and Kittens Hartz®
Advanced Care™ Once-A-Month® Flea and Tick Drops for Cats and Kittens

(note: this registration number also includes products for use on dogs, which will remain available)

Products with EPA Reg. No. 2596-148 contain 85.7% phenothrin, 2.9% methoprene. Products with EPA Reg. No. 2596-151 contain 85.7% phenothrin. Phenothrin is a synthetic pyrethroid that kills adult fleas and ticks. Methoprene is an insect growth regulator that interrupts the insect's life cycle by killing the eggs.

Phenothrin and Pyrethrum (PDF) fact sheet on synthetic pyrethroids. (5 pp, 24k, about PDF) - Exit EPA disclaimer

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Consumers Should Follow All Label Precautions

When using any pesticide product, consumers should carefully read and follow label directions each time they use a product. For products that are being manufactured during the phaseout, the company has agreed to add restrictions to the currently registered products’ labels to include that these products not be used on cats and kittens that weigh less than six pounds, on cats older than 13 years, or on kittens less than 5 months old. EPA’s review indicated that these changes may reduce risks to cats and kittens in the short term while the products or uses are being phased out. It is prudent to follow the new restrictions for all products, including products that consumers may have purchased before the new label restrictions.

The label directions consumers should follow include the following:

Reporting Adverse Effects

If your cat or kitten experiences symptoms that you think might be associated with application of a pesticide product, contact your veterinarian for treatment advice. In addition, you can report the incident by contacting the National Pesticide Information Center at 1-800-858-7378. NPIC can also offer advice and assistance with questions related to pesticide issues.

Alternatives for Preventing or Controlling Fleas and Ticks

Non-pesticide methods

Pesticide Products Registered for Flea and Tick Control

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Disposal of Unwanted Products

Schedule of Actions under the Agreement

Risk Mitigation Labeling

Voluntary Cancellation/Use Deletion

Letter to Customers

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Production to Stop

Product Shipment Ends

Existing Stocks

Additional Information

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