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Sentry FiproGuard Flea & Tick Prevention: 3 Treatments for Dogs 23-44 lbs $8.10, 3 Treatments for All Size Cats $9.15 & More + Free Shipping $49+

$8.10
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Chewy has select Sentry Dog/Cat Flea & Tick Prevention on sale (listed below). Shipping is free on orders $49+.Also available:
Amazon has Sentry Dog/Cat Flea & Tick Prevention on sale (listed below). Shipping is free w/ Amazon Prime or on orders $25+.
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Joined Apr 2007
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#2
Good price. Seems like Amazon matched.
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#3
Quote from Pantalaimon
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Good price. Seems like Amazon matched.
Thanks for letting me know. they weren't matching when I first looked at the deal.. i will take a look and update OP
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#4
This comparable to frontline?
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#5
Quote from Type X
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This comparable to frontline?
Same active ingredient.
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#6
Tip: All of them just contain different amounts of the same medicine. You can save money by using part of the large tube on smaller dogs or multiple dogs. I have two 20lb dogs. The 3-pack of their size is $9. The largest tubes sell for $19 for a six pack which is equal to 18 of the smaller ones. A little math can save you lots of money.
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#7
If this is the same active ingredient as Frontline why are the Chewy reviews so awful for this product? Frontline has much better reviews.

Not trolling, asking legitimately. I use Frontline on my dog and this is way cheaper.
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#8
I've used this product for years on both my indoor/outdoor cats and dogs. It has worked better than most of the other products I have tried. Especially considering the cost. Usually the issue is, over time, the fleas can become resistant to certain pesticides necessitating a switch to a different product with different active ingredients.
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#9
Quote from bumblingblonde
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I've used this product for years on both my indoor/outdoor cats and dogs. It has worked better than most of the other products I have tried. Especially considering the cost. Usually the issue is, over time, the fleas can become resistant to certain pesticides necessitating a switch to a different product with different active ingredients.
I've had to change the meds for the cats too. Have you tried this one with fipronil and S-methoprene like Pet Armor? Is there a big difference versus the one listed here with just fipronil?
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#10
Quote from legopacific
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I've had to change the meds for the cats too. Have you tried this one with fipronil and S-methoprene like Pet Armor? Is there a big difference versus the one listed here with just fipronil?
This is one still working for us. The odd thing is, the plus version, with the s-methoprene, did not work. Not sure why. If it's not broke, I'm not gonna fix it.
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#11
Quote from bumblingblonde
:
This is one still working for us. The odd thing is, the plus version, with the s-methoprene, did not work. Not sure why. If it's not broke, I'm not gonna fix it.
Yeah, that's strange. Sometimes I think these product are more effective just because the fleas haven't seen them before. I'll stick with the one that's working for now. Thanks!
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#12
Wanted to give this a try since its cheap but a reviewer said this killed her dog. Kinda scary.
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#13
I've used Sentry once on my cat about 7-8 years ago. She almost went into a seizure. I've never used this brand on any cats after that.
I'm sure the active ingredient is the same, but the excipients is probably different. Given that active ingredients make up only <5% of the product most of the time, those "inactive ingredients" make a whole lot of difference.
My theory is that due to the way topical flea meds work (by spreading through the oil on the coat), it needs to have a non-polar carrier. Depending on what they use, it might be something that passes the blood-brain-barrier. Given these pesticides are basically neurotoxins, it can easily cause seizures if the animal is deficient in certain glycoproteins, or if the dose is so high that it overwhelms the transport system initially.
Either way, after that incident, I stopped using Sentry and went some other topical (might be Frontline). Now I don't use topicals at all and just do Seresto. Pretty skeptical at first bc flea collars generally don't work, but this one has been working great so far (other than the 1 fake Ebay one).
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