The Foresto 70 cm collar by Bayer/Elanco is an anti-parasite collar for dogs over 8 kg that protects against ticks and fleas for up to 8 months. Its matrix contains two ingredients: imidacloprid kills fleas and flumethrin repels and kills ticks. They are released gradually and spread over the coat and skin. The collar is odourless, water-resistant, has reflectors and a safety release that opens if the dog gets caught. A 38 cm version exists for dogs up to 8 kg and cats. Puppies can wear it from 7 weeks.
What it is and who makes it
Foresto was developed by Bayer and is now made by Elanco (Germany). The main difference from ordinary collars is controlled release: the ingredients are released evenly over all 8 months, not just in the first weeks. The collar repels ticks (so they don't get a chance to attach) and kills fleas, and also acts on biting lice.
Specifications
| Parameter | Value |
|---|---|
| Length | 70 cm (for dogs over 8 kg) |
| Active ingredients | Imidacloprid, flumethrin |
| Duration | Up to 8 months |
| Protection | Ticks (repels and kills), fleas, biting lice |
| Features | Odourless, water-resistant, reflectors, safety release |
| Age | Puppies from 7 weeks |
How to fit it
- Take the collar out of the pack and remove the small plastic connectors from the inside.
- Put it around the neck so two fingers fit between the collar and the neck.
- Leave about 2 cm of excess and cut off the rest.
- Wear it continuously — protection works as long as the collar is on.
- Check the fit after a few weeks: on a growing puppy, loosen it.
Pros
- 8 months of protection. One collar for the whole tick season.
- Repels ticks. Ticks don't get time to attach — lower babesiosis risk.
- Odourless. Doesn't bother the dog or the owners.
- Safety release. Opens if the dog gets caught.
- Reflectors. Your dog is easier to see in the dark.
Cons and what to keep in mind
- High price. But over 8 months it's comparable to monthly products.
- Frequent bathing shortens its life. It's water-resistant, but frequent shampooing and long swims may reduce how long it works.
- Local reaction. Occasionally there's irritation or hair loss on the neck — remove the collar and see a vet.
- No worm cover. Deworming needs a separate product.
How to spot an original
Foresto is one of the most counterfeited collars. The original comes in sealed packaging with instructions in the local language, has reflective elements and a distinctive release clip, and is odourless. A suspiciously low price or a strong chemical smell is a warning sign. Buy it from trusted shops.
Who it suits
Dogs that spend a lot of time outdoors, in the countryside or in a house with a garden, and owners who find it hard to remember monthly tablets or drops. How to protect your dog and what to do after a tick bite is in fleas and ticks in dogs. For comparison, see our Bravecto review, a 12-week tablet. Other collars are in anti-parasite collars, and all products in parasite control.
Verdict
Foresto is a convenient way to cover the whole tick season with one collar: 8 months of protection, a repellent effect, no smell and a safety release. The key is to fit it correctly, keep it on all the time and buy the original.
Collar, tablet or spot-on
Each option has its strengths. The Foresto collar and permethrin spot-ons repel ticks, so a tick is less likely to attach. Tablets don't repel, but they don't wash off and leave nothing on the coat. The collar means you don't have to remember monthly treatments, but it's less practical for dogs that wear gear with a snug neck or swim often. If in doubt, discuss the choice with your vet based on your dog's lifestyle.
Frequently Asked Questions
How long does the Foresto collar last?
Up to 8 months when worn continuously.
Can my dog be bathed wearing Foresto?
Yes, it's water-resistant, but frequent shampooing and long swims may shorten its duration.
From what age can Foresto be used?
Puppies from 7 weeks.
Which size should I choose?
70 cm for dogs over 8 kg; 38 cm for dogs up to 8 kg and cats.
Can I take the collar off at night?
It's best to keep it on — protection works while the collar is on the dog.
Do I need drops as well as the collar?
Usually not. Don't combine different flea and tick products without your vet's advice.
