Sergeant's Guardian Flea and Tick Shampoo is a budget-priced, Clean Cotton scented wash built around a permethrin and piperonyl butoxide active ingredient combo, though this listing doesn't yet show a review count to back up its rating.
Owners who want the lowest-cost option in this roundup and don't mind that the listing is light on review history so far.
Skip if
You want to see a large volume of reviews before trusting a rating, since this listing shows a 4.4 star average without a supporting review count.
Form Shampoo
Weight 18 Ounces
Priced 73% below the category median ($16.99 across 131 tracked models)
Overview
["This 18 oz shampoo is priced at just $4.59, making it the least expensive option in this lineup, and it comes in a Clean Cotton scent rather than a medicinal smell. It's labeled for all life stages.", 'The active ingredients are permethrin and piperonyl butoxide, a common synthetic combination for on-contact flea and tick control.', "This listing shows a 4.4 star rating but doesn't display an underlying review count, even though it reports about 300 units bought in the past month, so the sales activity looks healthier than the review data can currently confirm."]
Pros
Lowest price in this roundup at $4.59 for 18 oz
Uses a permethrin and piperonyl butoxide active ingredient combination
Pleasant Clean Cotton scent instead of a medicinal smell
Labeled for all life stages
About 300 bought in the past month despite a thin review history
Cons
This listing doesn't show an established review count, so the 4.4 star average isn't backed by a large sample yet
Permethrin-based shampoos require careful handling around cats in multi-pet households, since permethrin is toxic to cats
No detailed size or weight information beyond the 18 oz volume is listed here
Specifications
Form
Shampoo
Weight
18 Ounces
Performance notes
The active ingredient combination of permethrin and piperonyl butoxide is a common synthetic pairing for on-contact flea and tick kill. If you have cats in the house, keep this dog-specific permethrin shampoo separate from any feline bathing routine, since permethrin is unsafe for cats.
What buyers say
This listing shows a 4.4 star average but no review count, so treat that rating as an early or limited data point rather than a large-scale consensus. Around 300 units bought in the past month suggests it's moving off shelves despite the thin review history.
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