Comfortis vs Seresto:Which is more popular?
In September 2026, Seresto had more branded searches than Comfortis among flea, tick and worm treatment brands in New Zealand. Seresto had about 320 branded searches, while Comfortis had 40. Seresto made up 2.2% of all flea, tick and worm treatment brand searches we track, and Comfortis accounted for 0.27%. When we asked ChatGPT and Google AI Overviews about flea, tick and worm treatment brands, Seresto appeared in one of the five answers and Comfortis in none.
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Top flea, tick and worm treatment brands in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Seresto was mentioned in one out of five: not in any of the three ChatGPT answers, but in one of the two Google AI Overviews. Comfortis did not appear in any of the five answers.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
Bravecto5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
NexGard5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Simparica4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Drontal3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers- Advocate2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Frontline1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Seresto1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Capstar0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers- Comfortis0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about flea, tick and worm treatment brands
5 answers
Asked ChatGPT
“Which flea, tick and worm treatment brand should I buy in New Zealand?”
Asked ChatGPT
“What are the best flea, tick and worm treatment brands in New Zealand?”
Asked ChatGPT
“What's the best flea, tick and worm treatment brand in New Zealand for protecting pets from parasites?”
Searched Google, AI Overview
“tick treatment for dogs”
Searched Google, AI Overview
“worm treatment for cats”
Brands are shown in the order each answer named them. The survey took place in New Zealand on October 21, 2026.
Is Comfortis or Seresto more popular in search?
This chart shows how often people search Google for Comfortis and Seresto by name. Each line represents a brand's share of searches for all nine flea, tick and worm treatment brands we track, month by month, from searches in New Zealand.
Share of searches by month for Seresto, Comfortis. The figures are in the table below the chart.
View monthly share of searches table
| Month | Bravecto | NexGard | Drontal | Simparica | Advocate | Frontline | Capstar | Seresto | Comfortis |
|---|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 34.4% | 27.6% | 9.3% | 10.9% | 5.5% | 5% | 3.5% | 3.1% | 0.7% |
| Nov 2025 | 33.7% | 24.4% | 8.3% | 11.1% | 6.1% | 6.7% | 4.7% | 4.4% | 0.62% |
| Dec 2025 | 37.2% | 20.9% | 9.4% | 8.6% | 6% | 6.2% | 6.4% | 4.6% | 0.67% |
| Jan 2026 | 39.6% | 19.6% | 10.1% | 8.5% | 6% | 6.6% | 5.8% | 3.2% | 0.54% |
| Feb 2026 | 36.7% | 20.8% | 10.2% | 8.3% | 5.9% | 7.7% | 7% | 2.9% | 0.41% |
| Mar 2026 | 34.6% | 20% | 10.5% | 8.6% | 6.2% | 10.9% | 5.9% | 2.6% | 0.64% |
| Apr 2026 | 33.8% | 20.7% | 11.7% | 7.4% | 6% | 9.6% | 7.1% | 3.2% | 0.49% |
| May 2026 | 36.3% | 22.7% | 11.9% | 7.2% | 5.5% | 5.6% | 7.6% | 3.1% | 0.27% |
| Jun 2026 | 37.4% | 22.8% | 11.9% | 7.4% | 6.1% | 5.3% | 6.4% | 2.4% | 0.34% |
| Jul 2026 | 40% | 23.6% | 10.7% | 6.6% | 4.8% | 6.1% | 5.3% | 2.4% | 0.44% |
| Aug 2026 | 39.5% | 23.8% | 12.2% | 7.5% | 5.4% | 4.8% | 4.2% | 2.2% | 0.37% |
| Sep 2026 | 51.5% | 21.6% | 8.4% | 5.5% | 4.5% | 3.4% | 2.7% | 2.2% | 0.27% |
How has the Comfortis and Seresto comparison changed over the last 12 months?
3 findings
- Seresto was ahead of Comfortis in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Comfortis’ share of searches among flea, tick and worm treatment brands in New Zealand moved from 0.7% to 0.27%, and its estimated monthly branded searches moved from 80 to 40.
- Across the 12 months ending September 2026, Seresto’s share of searches among flea, tick and worm treatment brands in New Zealand moved from 3.1% to 2.2%, and its estimated monthly branded searches moved from 360 to 320.
How did search popularity change for New Zealand flea, tick and worm treatment brands in September 2026?
2 changes
How are branded searches counted?
5 search terms
Brandwave collects information about searches that people make online using Comfortis’ and Seresto’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
Other head-to-heads among flea, tick and worm treatment brands
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