PissedConsumer.com strives to provide consumers with the right information to make informed purchasing decisions. Our website collected and compiled various consumer reviews about Merial and Bayer as well as customer ratings and recommendations for these brands. Each brand score is calculated based on set of relevant criteria and displays company performance over time.


Merial and Bayer Overview

Total reviews
Company responses
Issues resolved

Merial was first mentioned on PissedConsumer on Sep 1, 2010 and since then this brand received 221 reviews. It is 213 reviews more than Bayer received since Jul 12, 2011.

Merial and Bayer Consumer Ratings

53 out of 496 in Pet Medicine and Veterinary Clinics category
156 out of 774 in Pharmacy category
Product or Service Quality
38 in category
102 in category
Customer service
37 in category
110 in category
Value for money
40 in category
106 in category

Merial and Bayer Rating Details

Product or Service Quality
1.2 (51 reviews)
1 (3 reviews)
Reviewer's quote

I applied Frontline by the instructions and our dog was actually on the heavy side for the dose. It burned her skin terribly. $250 later she was shaved and cleaned and on two medications for 10 days.

Linda B

First time to use this product and she seized and died. She just turned 6 years old, very healthy, happy and beautiful cat..

Customer service
1.5 (35 reviews)
1 (1 review)
Reviewer's quote

...I called the customer care line and they were rude and uncaring. I will never purchase another Merial product and advise other animal lovers to avoid these products as well. Merial employees stated they could not tell me how long adverse reactions last...


No items

Value for money
1 (18 reviews)
1 (2 reviews)
Reviewer's quote

I purchased Frontline Plus for our dogs, 4 to be exact, all different weights. Applied as instructed. Product states it's a monthly spot-on treatment, it kills adult fleas within 12 hours and destroys ticks and chewing lice within 48 hours. Checked our dogs about 24 hours later, still had living...


...I don't have money to just throw away on something that does not work. I bought it at Petco June 21,2017 and at that time bought Frontline for my two cats, that worked fine, this did not. Item # 002254864 ..


Merial and Bayer Pros and Cons

  • Price
  • Quality
  • Price
  • Bad product frontline plus for dogs and cats
  • Verry poor customer service
  • Bad product
  • Product
  • K9 advantix ii

Merial and Bayer Most Positive Reviews

Top rated reviews

I take in rescue animals. And always use frontline. I have 7 cats. 3 dogs. It wasnt cheap. I cleaned and vacuum. This t...

No votes

Merial and Bayer Most Critical Reviews

Lowest rated reviews


I've been using frontline plus for 7 years on all my animals, 2 dogs and 2...


I bought a pack of 2 Advantix II for my pup June 21, 2017. I gave him one of them behind his neck and it did not work,...

Merial and Bayer Latest Reviews

Recent published reviews

I used to like Frontline for my dogs and it worked great, but the last 2 times I used it, it was like pouring water on...

Read all 221 reviews

watch rt news big expose on bayer being affiliated with torture during a very dark period in history. russian news this...

Read all 8 reviews

Merial and Bayer Products and Services

Most reviewed product and services
  • Merial Flea Control (81 reviews)
  • Merial Frontline Plus Flea Control (47 reviews)
  • Merial Heartgard Plus Dewormer (7 reviews)
  • Bayer Flea Control (2 reviews)
  • Bayer K9 Advantix Ii Flea Control (2 reviews)
  • Bayer Drontal Dewormer (2 reviews)