Frequently Asked Questions

Dogs

  • 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.

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.

General

  • Can I use this if my pet is on medication?

    Always consult with a veterinarian before applying flea and tick treatment to a sick or debilitated cat.

  • Can I use this if my dog is on medication?

    Always consult with a veterinarian before applying flea and tick treatment to a sick, nursing or debilitated dog.

  • Can I order cat toys from your website?

    Hartz is a manufacturer and does not sell directly to consumers. Our website was designed for informational purposes.