Best Cat Flea Collars of 2025

"I’ve been using Hartz flea collars for decades! They have always worked for me. Following the directions is crucial; you have to stretch them before applying to activate the medicine. Living near a state park with deer, I’ve had to deal with ticks, but with these collars, my pets never get fleas or ticks. I only buy Hartz!"

"I had a severe flea infestation on my cat. After giving him a good bath, I applied the Hartz collar, and it worked amazing. I made sure to keep the collar loose initially and gradually adjusted it. Along with regular vacuuming and using additional flea treatments, my apartment is now flea free for over six months!"

"Despite trying various treatments, I found that this collar did not work for my cat. After multiple unsuccessful attempts, my vet advised removing it, stating that it does nothing for the fleas. I should have consulted the vet first instead of trying over-the-counter products. Now, I'm using Revolution Plus monthly, and there's been significant improvement."

“I was initially skeptical about these collars, but I’m so glad I decided to try them! Within an hour of putting the collars on my three cats, I was already combing out dead fleas. The previous collars I tried just didn’t work anymore. These collars are soft, long, and come in great colors. Plus, they have no irritation on my cats. I recommend these to all my friends!”

“After just 24 hours of wearing the collars, I started combing out dead fleas from my cats. They’re easy to put on and the extra length allowed me to treat our outside feral cats too! I love the colors; it makes it easy to distinguish between my male and female cats. I highly recommend these collars!”

“These collars have a great design—no smell and they seem to be working perfectly. My cats haven’t shown any signs of irritation, and I appreciate that they don’t have the typical medicated smell. For the price, these are definitely better than the more expensive brands!”

"For years, I battled fleas living in the country with my dogs. I tried many over-the-counter products and even expensive collars, but nothing worked! After using this collar, it really worked! My pets had no allergic reactions, and their hair grew back. I’m thrilled to report that the few fleas that entered my home were weak and easily squished. I waited six months to review it, and I’m so glad I did. I’ll definitely buy these collars again!"

"I was pleasantly surprised by the all-natural flea collar for my dog. In just a week, I noticed a significant decrease in flea activity, which was such a relief. The collar is comfortable and easy to adjust, and I love that it’s odorless. Overall, this collar has been a game-changer for us, providing peace of mind while protecting my pet naturally. I highly recommend it!"

"I've ordered these collars twice for my cats. What I noticed is that they scratched a lot less with these compared to others. I feel good about using natural ingredients. I first bought them in February and just ordered replacements in August, even though they’re supposed to last a year. They really work!"

"I should have gotten these a long time ago. No more fleas and they have calmed all three of my cats down tremendously. I love the smell, not chemically, and they honestly work."

"This collar is a convenient and safer alternative for cat owners who prefer natural options. I recommend consulting a veterinarian to find the best flea and tick prevention for your cat, especially if you have severe infestations."

"Putting on this collar was a breeze. My cousin's cat was very comfortable wearing it, and after a few weeks, she noticed fewer signs of fleas. It works just as well as some more expensive collars."

"I recently picked up the Hartz UltraGuard Flea & Tick Collar for my cat, and I'm very pleased with the results! With 7 months of protection, it's a hassle-free solution that keeps my furry friend safe from those pesky pests. The collar is simple to put on and adjust, fitting my cat comfortably. I've noticed a significant decrease in flea and tick activity since using it, and the collar even holds up well when my cat plays in the rain!"

"Happy I purchased this collar. My cat no longer has fleas, and I noticed the improvement in just four days. There wasn't a strong smell coming off the collar, which was nice. I prefer these collars over pills or topical treatments because they feel much safer and deliver better results!"

"For the money, I guess they were okay. My cat still has the collar on, but I have to give her Capstar every couple of months to kill the fleas. The flea collars are about the same price as those pills, but the ones that work 100% seem to cost much more. I'm still looking for a collar that actually lives up to its claims!"

"Since putting on these collars, I've seen no more fleas. I even used a flea comb before and after, and it seems like I'm winning the battle!"

"After just an hour of putting the collars on, I saw dead fleas! It's been over a month, and my cats are much happier now."

"I bought the collars after noticing my indoor cats scratching more than usual. After a few days, there was a significant reduction in scratching, and now it's been over a month with no scratching at all!"

"I have three indoor cats that somehow got fleas. Bathing them is impossible, so I tried some cheap flea drops with no success. I bought these collars on a budget, not expecting much, and to my surprise, they worked! My cats are now flea-free, and I will definitely buy again when it’s time to replace the collars."

"These flea collars helped us finally get rid of our cat's fleas in just a couple of days! Plus, the collar has stayed on for nearly two months, which was something I was initially concerned about. Great product!"

"I've tried various flea collars before, and while some worked well, this one really impressed me. After a week of wearing it, I couldn't find any fleas when I combed her fur. She's comfortable with it, no irritation, and even my other cats like it!"

"I found these collars to be amazing, as they worked very well for my cats. After pairing them with a topical ointment, the fleas were completely gone! They fit my chunky cats perfectly, too!"

"After using these collars, my cat has stopped itching. They work really well!"

"I was skeptical at first, but these collars actually work! My boy had fleas when I brought him home, but after putting on the collar, I noticed no more fleas. The package of four is a great bargain, and there's barely any odor!"

"As a longtime Seresto user, I found this Adam's Plus Flea and Tick Collar to be a great alternative. Living near a wooded area, I needed something more budget-friendly. After putting the collars on my pets, I noticed a substantial reduction in scratching within hours. It's been a week, and there have been no signs of discomfort since. I'm very particular about my pets' well-being, and so far, I’m quite pleased!"

"I gave this collar a 5-star rating because I know Adam's products are generally good. However, my cat had a reaction after wearing it for only 15 minutes. She became anxious, and the area around the collar felt almost hot. After removing it, she returned to normal quickly. I still believe in Adam's products and will continue to use them, just with caution!"

"I ordered this collar to save some money, but it turned out to be a big mistake. After three weeks of use, my cats still had as many fleas as before. The smell was unbearable, and despite treating our home, it simply didn’t work. I can't wait for the Seresto collars to arrive; they never fail me. I just want my money back!"

"I was initially skeptical, but after taking three of my cats to the vet, I found not a single flea on them! This product has turned me into a believer, and I plan to purchase it again."

"With multiple cats, these collars are the best option for us. They effectively keep fleas away without causing excessive scratching, and the value is fantastic—four for the price of one!"

"I really like the scent of these collars, and my kittens seem unbothered by them. However, after a week, I still found fifteen adult fleas on each cat. I'm hoping the natural ingredients will eventually kick in."