Dog ate chocolate?

ask a vet

Does Hartz flea treatment work?

Species: Dog
Breed: black lab and lab/ba
Age: 5-8 years
My dogs have gotten fleas and I've been putting Hartz flea treatment on them but it doesn't seem to be working. The dogs still have fleas, although not as many as they previously did, but now they also have horrid rashes all over them and they won't stop scratching and chewing. The poor guys are missing fur everywhere, have sores and scabs everywhere and keep chewing themselves until they bleed!! I don't know what to do for them and I feel horrible. All they do is cry and whine now. What can I do to help them and to alleviate the itching???

Related Article: Your Pet Has Fleas!


Online vet, Dr. Marie

Dr. Marie replied:

I can't tell you how frustrated I am over pet store flea products like Hartz, Zodiac and Biospot. They do not work! I don't understand why they are able to sell these products.

This year has been one of the worst years ever for fleas. I think this is because we are creating a population of fleas that is hard to kill. So, when you use a product like Hartz, you will kill some fleas, but the fleas that remain are the strong ones that withstood treatment. So, we end up with resistant fleas.

Unfortunately the products that do work to kill fleas are more expensive. The ones I recommend are Frontline, Advantage, and Revolution.

In many cases, after treating with one of the above products the skin problems will go away as well. However, sometimes dogs will have skin infections as a result of fleas. If this is the case then you will need to have medication prescribed by the vet in order to clear things up. There is no over the counter cream or medication that will be helpful.

I'm sorry for your frustrating experience. I wish I could give you more helpful advice, but it does sound like a vet visit will be necessary!



Check out our dog age calculator and cat age calculator.

Want to receive pet coupons, vet advice and info on new pet products in your inbox?

* indicates required

We'll only send you great stuff, never spam. Unsubscribe any time.

Disclaimer: Although Dr. Marie is a qualified veterinarian, the information found on this site is not meant to replace the advice of your own veterinarian. AskAVetQuestion.com and Dr. Marie do not accept any responsibility for any loss, damage, injury, death, or disease which may arise from reliance on information contained on this site. Do not use information found on this site for diagnosing or treating your pet. Anything you read here is for information only.

Search for similar questions:

ask a vet

Popular questions...

Cat with megacolon We have a cat, Poofter, who has mega-colon. The vet prescribed Hills Prescription... (7964 views)

Yellow fluid from nose. Dr. Marie, My male pug, aged 10, stuck with a piece of apple last night (29/1), I... (3810 views)

Why did my cat die? Hi Dr. Marie, I know you are probably overwhelmed but I pray you give me some piece... (9910 views)

Radiation danger to pets? I am currently undergoing radioactive iodine therapy and my doctor says that I need... (19506 views)

Dog biting at tail. I just noticed earlier today Sept. 29th that my Husky has chunks of hair missing... (22980 views)

Hungry and losing weight. Our 17 year old indoor cat, one of two from the same litter, has always been skinny,... (7312 views)

Vaccine FeLV positive cat? If my cat tested positive for FeLv should he still get vaccine boosters like fvrcp,... (3632 views)

Older dog won't eat. My dog has been losing her appetite for about 2 months. She would no longer eat her... (9601 views)

Vomiting undigested food. I read in a magazine Woman's World about your service to give pet medical advice. My... (13983 views)

Pug died suddenly. Aloha, Our beloved Pug Tobi passed away unexpectedly on Wednesday and as much as I... (4869 views)

See all questions...

Dr. MarieDr. Marie is a veterinarian who practices in a busy animal hospital in Ottawa, Ontario. She created Ask A Vet Question as a resource for good, accurate veterinary advice online. Dr. Marie treats dogs, cats, hamsters, guinea pigs, and rats. She has been a vet since 1999.

Is an online vet visit just as good as a trip to your veterinarian? No! But, many times, asking an online veterinarian a question can help save you money. While Dr. Marie can't officially diagnose your pet or prescribe medications, she can often advise you on whether a vet visit is necessary. You can also ask Dr. Marie for a second opinion on your pet's condition.