Wondercide - Flea & Tick Shampoo for Dogs and Cats - Flea and Tick Treatment with Natural Essential Oils - for Pets Over 4 Months - Powered by Plants - Rosemary - 12 Fl oz Review
By Dr. Lena Ortiz · Canine wellness writer · Published 2026-05-12 · Updated 2026-06-23
4.4(2,365)Amazon rating$19.991,000+ bought last month
Our verdict
Wondercide's Flea and Tick Shampoo uses natural essential oils in a rosemary scent, works for dogs and cats over 4 months, and its 4.4 star average across 2,365 reviews makes it one of the more proven natural options in this category.
Multi-pet households with both dogs and cats over 4 months old who want a single natural, essential-oil based shampoo for flea and tick care.
Skip if
You have a pet younger than 4 months, or you prefer an unscented shampoo since this one has a distinct rosemary fragrance.
Form Liquid
Priced 18% above the category median ($16.99 across 131 tracked models)
Our scorecard
4.4/5overall
Owner rating4.4/5
4.4 average across 2,365 owner ratings
Popularity3.2/5
2,365 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other dog and cat food, health, gear and grooming we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
["Wondercide built this 12 oz shampoo around natural essential oils, led by a rosemary scent, as an alternative to synthetic pesticide-based flea and tick shampoos. It's labeled for all life stages and safe for pets over 4 months, and it works for both dogs and cats, which makes it a flexible pick for mixed-pet households.", 'As the number 4 ranked shampoo in Dog Flea Control Shampoos on Amazon and number 1,210 across all of Pet Supplies, Wondercide has built significant scale in this space. The plant-powered positioning lines up with a broader trend toward essential-oil based pest care over harsher chemical treatments.', "At $19.99 for 12 fluid ounces, it's priced similarly to other premium natural shampoos, and with 2,365 reviews averaging 4.4 stars and about 1,000 bought in the past month, it has one of the largest and most consistent track records in this shampoo lineup."]
Pros
Natural essential oil formula led by rosemary
Works for both dogs and cats over 4 months
Very strong review volume at 2,365 reviews and 4.4 stars
High Best Sellers Rank, number 4 in Dog Flea Control Shampoos
Suitable across all life stages once past 4 months old
Cons
Not intended for pets younger than 4 months
Rosemary scent may be noticeable and isn't for owners wanting fragrance-free
12 oz bottle is smaller than some flea shampoo sizes for the same price
Specifications
Form
Liquid
Performance notes
The all life stages labeling and dual dog-and-cat compatibility point to a broadly formulated liquid shampoo rather than a species-specific or age-specific product, and the essential oil approach positions it as a plant-powered alternative to synthetic pesticide shampoos for routine flea and tick care.
What buyers say
With 2,365 reviews averaging 4.4 stars and roughly 1,000 bought in the past month, this is one of the best-selling and most consistently reviewed shampoos in the flea and tick category, reflecting strong repeat trust in the Wondercide brand.
Yes, this shampoo is labeled for both dogs and cats over 4 months old, so it can work as a shared flea and tick shampoo in a multi-pet household.
Is this shampoo safe for puppies or kittens?
It's labeled for pets over 4 months, so it's not intended for very young puppies or kittens. Check with your vet before using any flea and tick shampoo on a young animal.
What does the rosemary scent smell like after bathing?
Since rosemary is the named scent, expect a noticeable herbal fragrance right after the bath rather than an unscented or lightly perfumed result. Owners sensitive to strong scents should keep that in mind.
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