Frequently Asked Questions for Cats

  • Can I use Hartz UltraGuard® if I have already applied another flea and tick control product?

    Always read the label directions, typically only one flea and tick product should be used on your pet at a time. Using multiple flea and tick products at the same time may result in interaction which could cause illness or irritation. Consult a veterinarian about the use of heartworm medication.

  • What is the difference between a topical and collar product?

    A topical is a monthly dose of liquid flea & tick product applied to the back of the pet’s neck, while the Hartz collar is a solid plastic band that is fastened around the pet’s neck and provides up to seven months protection against fleas & ticks. Both products require registration by the US EPA. Product registration includes a full toxicology and efficacy profile which is reviewed prior to approval by the authorities and determines the labeling.

  • Should I use Hartz UltraGuard® on my pet all year round? Or just during flea and tick season?

    The Companion Animal Safety Council recommends that pets should be treated year round with a flea and tick product. Fleas and ticks may be dormant during freezing winter months but can still be active on days above freezing temperatures. These parasites utilize leaf litter and even snow to provide insulation in the extreme cold.

  • Does Hartz UltraGuard® have an expiration date?

    An expiration date is not required on Hartz UltraGuard® products. However, Hartz has established a shelf life for all UltraGuard® products to ensure a quality product.

  • Do fleas and ticks have to bite my pet for Hartz UltraGuard® to work?

    No. Hartz UltraGuard® Topicals and Collars evenly distribute protection over your pet’s body killing or repelling the parasites before they have a chance to bite.

  • How long does it take for Hartz UltraGuard® Topicals to kill fleas?

    Hartz UltraGuard® Topicals start killing fleas within 15 minutes after application and continues to kill for 30 days.

  • Can I use flea and tick products for cats on my dog?

    NO, flea & tick products labeled for cats must only be used on cats. Likewise, flea and tick products labeled for dogs should not be used on cats. This ensures safe and effective flea & tick treatment since products are specifically formulated for cats or dogs .

  • Are Hartz UltraGuard® products registered?

    Yes, all Hartz UltraGuard® products are registered with the EPA and the states, data has been provided for both efficacy and safety as required.

  • How long does a Hartz UltraGuard® Flea and Tick topical work for?

    One tube/application of Hartz UltraGuard® Topicals provides one month of protection.

  • How long does a Hartz UltraGuard® Flea and Tick Collar work for?

    Hartz UltraGuard® Collars provide up to seven months of protection against fleas and ticks.

  • Can I stop using flea control once the fleas are gone?

    This is not recommended. Once an infestation is under control it is important to continue using a flea and tick control product to prevent re-infestations in the future. Although adult fleas are not seen on the animal, the sub-adult stages (eggs, larvae, pupae) may be developing within the house (carpet, upholstery). To ensure full protection against all life stages of fleas, Hartz recommends treating all affected areas of your pet’s surroundings.

  • How does Hartz UltraGuard® kill fleas and ticks?

    Hartz UltraGuard® contains EPA registered insecticides that have been proven to control fleas and ticks. These insecticides have been specifically formulated to provide protection across the entire body of the pet for the duration indicated for each product.

    Example: Protection is one month for topicals and seven months for collars.

  • How long after application can my pet be bathed or go swimming?

    Your pet should not be bathed 48 hours both pre and post application.

  • What is an insect growth regulator?

    An insect growth regulator (commonly referred to as an IGR) is a substance which interferes with the immature development of an insect; therefore, they never reach maturity, cannot multiply thus eliminating infestation.

  • Are Hartz UltraGuard® Flea and Tick Collars waterproof?

    All Hartz UltraGuard® Flea & Tick Collars are water resistant and can remain on your pet while swimming or in the rain.