c-2.2,0-3.8,0.5-4.8,1.6c-1,1.1-1.5,2.6-1.5,4.7v2.9H8.5V15h2.9v14h5.8V15H21l0.5-4.8H17.2z"/>

Ask a Vet

General Questions

Fleas are annoying to my cat and dog, but do they also pose a health risk?
Yes, fleas can transmit several diseases and conditions to your dog and cat such as flea anemia, flea allergy dermatitis and tape worm infection.


How do I know which of your various flea and tick products is right for my pet?
Hartz recommends an integrated pest management system which incorporates products for your pet as well as products for your home and yard.


Are Hartz flea and tick topical drops as good as those that the vet recommends?
Hartz® UltraGuard Pro® topical drops are held to the same Federal EPA registration standards as those products commonly sold by veterinarians. All topical flea and tick products must be registered by the EPA’s Office of Pesticide Programs before they can be sold or distributed in the United States. Purchasing a product from a veterinarian does not imply that the product performs better than those products sold at retail.

*Based on Federal EPA safety and efficacy.


How long do fleas live if they go untreated?
The average adult flea life span lasts up to 2 months and in that time a female flea can lay up to 2000 eggs.


How long do ticks live?

The life span of a hard shell tick is generally about two years. In that time, it will go through three life stages: larvae, nymph and adult. In that time, the female can potentially lay 5000-6000 eggs.


Are the fleas you find on cats and dogs the same species of flea?
There are several types of fleas in the world that feed on different animals but the most common flea is the cat flea. However, don’t let the name fool you, cat fleas bite cats, dogs and people too.


Can flea and tick products be used on any animals in the household?
No, products should be used on the intended animal only. In fact, using animal specific products on other type of animals can result in serious illness and can even be fatal. This includes using them on rabbits, ferrets, guinea pigs, etc.


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

We recommend that you keep the dog or cat from getting wet until the application site is completely dry, usually 48 hours.


Will my cat or dog experience any side effects from using topical flea and tick products?
Some reaction may occur after using any pesticide product. Generally, if a pet is going to have any sensitivity, it would be a skin irritation at the site of product application. This should not persist for long, but if it lasts for more than a couple of days, or becomes more severe, we recommend you consult your veterinarian as soon as possible.


My friend recommended wearing rubber gloves when shampooing our dog and cat with your flea & tick shampoos. Is this a good idea?
Although it is not necessary to wear rubber gloves, some people may have an allergic reaction to any flea and tick shampoo. Wearing rubber gloves is a good idea, particularly if you have sensitive skin.


Our dog and cat are outdoor animals and hang out with other people’s pets. Should I use flea and tick products as a preventative measure?

Yes, fleas and ticks expose your pet to numerous parasite borne diseases. The best way to solve a flea and tick problem is to prevent one in the first place. Being proactive is the best practice. Always use Hartz® UltraGuard Pro® or Hartz® UltraGuard Plus™ flea and ticks topical drops or collars on your pet year round. See Preventing vs. Treating your flea and ticks problems.


Will a flea problem ever just go away by itself if left untreated?

No, in fact, if left untreated your problem will turn into an infestation. The female flea can lay about 50 eggs per day and up to 2000 eggs in a lifetime. The eggs are laid in the pet’s coat and drop off the pet almost anywhere it may roam, especially where your pet sleeps, such as rugs, carpets, upholstered furniture, cat boxes, kennels, etc. In just 30 days, 25 adult females can multiply into 250,000 fleas.
Back to Top


Dog Related Questions

Is there a period of time before and after application of topical drops that I should NOT bathe my dog?
If you choose to bathe your pet before applying Hartz® UltraGuard™ Flea and Tick Drops, wait a day after bathing to apply. If you choose to apply the drops first, then it’s best to wait two days after application to bathe your pet.


How important is it to keep within the weight guidelines when using Hartz flea and tick products for dogs?
It is very important to keep within the weight guidelines when using dog topicals. For example, if your dog weighs 20 lbs. and you use drops for a 4-15 lb dog, then you are lowering the dosage and hence lowering the efficacy of the product. On the other hand, if you were to use drops for a dog weighing over 60 lbs. on your 20 lb dog, then you are going above the recommended dosage set forth by the EPA for safety. Just like with a medication it is important not to go above or below the recommended dosage.


How does my dog get fleas?
Fleas can be picked up outside in grassy areas, and are most prevalent in areas that are shaded. As your pet walks through these areas, the fleas hop on. Humans can even bring fleas into their home on their clothing, bottom of shoes, etc., and then pass them onto their pet.


I have a puppy that already has fleas. How old does a puppy have to be before I can use one of your flea and tick products?
Puppies must be 12 weeks of age or older and must weigh at least 4lbs.


Can I use your flea & tick products on a pregnant dog?
No, it is not recommended to use our flea and tick products on pregnant dogs, read the product labels for full precautions.


What if my dog drinks some of the bath water during the bath?
If your dog does get a few drinks of the water before you can stop it, this should not likely cause a problem because the bath water will have diluted the shampoo. However, it is possible to have some gastrointestinal upset (vomiting or diarrhea) from the soap in the shampoo usually within 24 to 48 hours of the bath. Contact your veterinarian if the signs persist for longer than 48 hours or if they become worse.


How do you know if a dog is going have an allergic reaction to a topical flea and tick product?
Unfortunately, this is not an easy question to answer. Your dog can have a reaction to the first exposure to a product, to a later application of the product, or never. While reactions to topical drops are rare, they might result in mild skin irritation. It is important to observe your pet for the first 24 hours and contact your veterinarian if you note any abnormal reactions.


I have an elderly dog, is he too old for a topical flea and tick treatments and, if so, what do you recommend I should do now to control his fleas?
Your dog is not too old. In fact, it is important to provide effective flea and tick control for your senior dog’s health and well-being. However, if your dog has been diagnosed with an illness, consult your veterinarian before using any topical flea and tick product.


Should I be concerned about mosquitoes biting my dog?
Yes, mosquitoes are not only a nuisance but they can also carry diseases. Most concerning is their ability to transmit canine heartworms. Dr. Melinda recommends the use of Hartz® UltraGuard Pro® or Hartz® UltraGuard Plus™ to kill mosquitoes on contact.


How do I know if my dog has ear mites?
Ear mites are barely visible to the naked eye; however, here are some symptoms to look for:

  • Head shaking or carrying the head tilted to one side
  • Excessive scratching at the ears (there may be sores around the ears)
  • Dark brown to black crusty discharge in the ears
  • Difficulty hearing – especially if combined with other signs

How many different types of intestinal worms can attack my dog?
As a dog owner, it’s important to know about the different types of worms and their potential effects on your dog’s health. The most common are roundworms, hookworms, tapeworms and whipworms.


How does my dog become infected with intestinal worms?
How your pet becomes infected depends on the type of worm. Puppies may become infected with roundworms while in uterus, thus they are already infected at birth. Otherwise, they can become infected through their mother’s milk. This is also true of hookworms. To become infected with tapeworms, dogs need to ingest an infected flea.

Back to Top


Cat Related Questions

How do you know if a cat is going have an allergic reaction to a topical flea and tick product?
Unfortunately, this is not an easy question to answer. Your cat can have a reaction to the first exposure to a product, to a later application of the product, or never. While reactions to topical drops are rare, they might result in mild skin irritation. It is important to observe your pet for the first 24 hours and contact your veterinarian if you note any abnormal reactions.


Can an indoor cat get fleas?
Yes, indoor cats can also get fleas. It is very easy for a flea to hitch a ride on your clothing, bottom of shoes, or come in with your dog after he’s been out playing. Therefore, it is important to use preventative products such as Hartz® UltraGuard Pro® Flea & Tick Drops for Cats even if you have an indoor cat.


I have a young kitten that already has fleas. How old does a kitten have to be before I can use one of your flea and tick products?
Kittens must be at least 12 weeks old in order to use any of our flea and tick products.


I have a 16 year old cat, is she too old for topical flea and tick treatments and, if so, what do you recommend I should do now to control her fleas
Topical treatments should not be used on senior cats. In fact, it is important to provide effective flea and tick control for your senior cat’s health and well-being. However, if your cat has been diagnosed with an illness, consult your veterinarian before using any topical flea and tick product.


What if my cat licks or grooms itself after I’ve applied any flea and tick product?
It is important to apply the product in a location that your cat cannot easily reach while grooming. It is also recommended that you prevent your cat from grooming immediately after product application. If your cat does happen to groom itself, you may see some drooling or foaming at the mouth due to the product taste. If these signs continue or become more severe, contact your veterinarian.


What if my cat drinks some of the bath water during the bath?
If your cat does get a few drinks of the water before you can stop it, this should not likely cause a problem because the bath water will have diluted the shampoo. However, it is possible to have some gastrointestinal upset (vomiting or diarrhea) from the soap in the shampoo usually within 24 to 48 hours of the bath. Contact your veterinarian if the signs persist for longer than 48 hours or if they become worse.


Can I use your flea and tick products on a pregnant cat?
No, it is not recommended to use our flea and tick products on pregnant cats; read the product labels for full precautions.


Should I be concerned about mosquitoes biting my cat?
Yes, mosquitoes are not only a nuisance but they can also carry diseases. Most concerning is their ability to transmit feline heartworms. Dr. Melinda recommends the use of Hartz® UltraGuard Pro® or Hartz® UltraGuard Plus™ to kill and repel mosquitoes on contact.


How do I know if my cat has ear mites?
Ear mites are barely visible to the naked eye; however, here are some symptoms to look for:

  • Head shaking or carrying the head tilted to one side.
  • Excessive scratching at the ears (there may be sores around the ears).
  • Dark brown to black crusty discharge in the ears.
  • Difficulty hearing – especially if combined with other signs.

How many different types of intestinal worms can attack my cat?
As a cat owner, it’s important to know about the different types of worms and their potential effects on your cat’s health. The most common are roundworms, hookworms, tapeworms and whipworms.


How does my cat become infected with intestinal worms?
How your pet becomes infected depends on the type of worm. Kittens may become infected with roundworms while in uterus, thus they are already infected at birth. Otherwise, they can become infected through their mother’s milk. This is also true of hookworms. To become infected with tapeworms cats need to ingest an infected flea.
Back to Top