HartzUltraGuard Pro Reflective Flea & Tick Collar for Dogs and Puppies, 7 Month Flea and Tick Prevention Per Collar, 1 Count

Works great! My lab runs the fields all summer long. Keeps the critters off him. I would definitely recommend this product

This has worked great on my dog. Highly recommed.

It worked, but it caused problems. I’ve bought this collar 3 times and trialed, and I know that correlation isn’t necessarily causation, but I feel it is important to put out here.Side effects; my dog experienced not one but two UTI’s after using this. He is 6 months old and with the week of putting on the collar became incontinent. After another week I took him to the vet where he was dx with a UTI. Collar broke the next day, so it didn’t last long (big dog, fast growing, snagged and ripped the plastic securement off). His symptoms cleared up, and we went on. I bought another one after this thinking that since he was feeling better he could tolerate the medicated collar again - I was wrong. The exact same slew of symptoms started within the week of applying. Wetting the kennel, incontinence at night, howling while peeing, etc. I took the collar off again, and gave him cranberry supplements on vet recommendation and it took another 2 weeks to clear up. Tried it once more and the second I saw a moment of incontinence I took it off.TL;DR I think my dog is allergic to it or experiencing an unlisted side effect.It functions for the animals who aren’t allergic to it. Be aware of your animals normal functions and watch closely for changes. He could have died if we weren’t watching the changes medically - we are new dog owners and he had a persistent fever for over 2 weeks and we didn’t catch on because we didn’t know.

Bought 7 collars 2 for dogs and 5 for cats. Hart flea collars attract fleas, they do not kill fleas.I've always used seresto collars and they work like magic. Collars weren't lasting full 8 months so I asked my vet. He said try different collars, maybe fleas population is developing immunity. Didn't have super high hopes with these because they seemed way too cheap to actually last as advertised. However, 11k reviews with 4 stars what would it hurt to try.....Gave everyone capstar to kill anything on them. Received the collars 2 days later and put them on. No visible fleas on my dogs or cats when collars went on. Some flea eggs, but collar should be working by the time they hatch. Figured we would be good.......11 days my animals had these collars on and the fleas exploded! The dogs had huge nests of flea eggs 2 in away from the collars and huge nest of flea eggs on their bums (not there when collars went on). The fleas were crawling all over them and me! My poor cats weren't any better with the fleas playing on their collars and crawling all over their faces. Fleas were 4 times worse then when I took the old seresto collars off. They were everywhere!Pulled these collars off received new seresto collars 2 days later. Within 4 days wearing new seresto collars no more fleas on dogs, no more fleas on cats, no more nests of flea eggs, no more fleas in the house.These may work for some, but they definitely did not work for us. Makes me wonder if reviews were skewed.Will stick with seresto, even if they quit working a month early, still way more reliable and cheaper than other options I've found.

Good product for the money

Didnt work for my dogs.

Showed up fast and is easy to put on. It’s very long so you have plenty of room if your dog is big this fit my rottie really well. I just tuck the extra in around the collar just put on last night so we’ll see how it works and I will update this review in a couple months.

Works well, when first open there is the medicine smell but it dose ware off, but it did irritate the neck area of the dogs but take breaks here and there