I've looked at all of the pictures and the descriptions and nowhere do I see what the active ingredient is. What is it?

Hello! The active ingredients in the Activate II Collar are 4% Deltamethrin and 0.5% Pyriproxyfen.

Can I use with the tevrapet drops as well?

I'm 99 % sure that you use one or the other . So your pet doesn't get too much of the medicine . There are natural flea killers you could try . But if the drops or collar alone don't work for you I think it's time to try something else . Perhaps Suresto collar or drops . The Terra didn't work so I had to spend the extra money and get suresto . Or try Frontline both recommend by my vet for otc flea kill .

Are there 2 collars in tin?

It looks like this container has two. My husband ordered them, so I can't say for sure. I do know that these collars have worked fabulously on our cats and dog. We tried the $70 ones that worked very well for about 30 days, then they were useless. We bought these and haven't had to change them - really good protection.

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TevraPetActivate II Flea and Tick Collar for Dogs, 12 Months Prevention, 2 Count, for Medium and Large Dogs

TevraPetActivate II Flea and Tick Collar for Dogs, 12 Months Prevention, 2 Count, for Medium and Large Dogs

Product ID: 225605963

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Details

Brand
TevraPet
Item Form
Collar
Scent
No Scent
Item Weight
5.9 Ounces
Active Ingredients
Deltamethrin
Age Range (Description)
All Life

⚡kills & repels on contact

💧waterproof & mess-free

🛡️12 months continuous protection

Description

🦴 Stay bite-free, stress-free, and trail-ready with Activate II!

YEAR LONG DEFENSE - Up to 12 months of nonstop flea, tick, and pest protection—because your dog deserves the best all year round.
INSTANT PEST ACTION - Starts killing and repelling fleas, ticks, and mosquitoes within 24 hours—no bites, no waiting.
VET APPROVED SAFETY - Powered by proven Deltamethrin and Pyriproxyfen ingredients, trusted by vets and safe for your furry friend.
MESS FREE ODORLESS - No greasy residue or unpleasant smells—just hassle-free protection that fits seamlessly into your dog’s lifestyle.
PROUDLY MADE IN THE USA - Crafted and quality-tested in Texas, backed by a 1-year satisfaction guarantee for peace of mind.

The TevraPet Activate II Flea and Tick Collar offers medium and large dogs up to 12 months of continuous protection against fleas, ticks, chewing lice, and biting flies. Featuring a waterproof, odorless formula with vet-approved active ingredients Deltamethrin and Pyriproxyfen, it kills and repels pests on contact within 24 hours. Each pack includes two collars, ensuring long-lasting, mess-free defense for indoor and outdoor dogs, proudly made and quality-tested in the USA.