The Seresto Dog Flea and Tick Collar does not have an expiration date as long as it has remained in its original container and stored in cool/room temperature conditions. Once the collar has been opened placed on your animal, it will last 8 months according to the manufacturer. You may contact Bayer Animal Health at 800-255-6517 for more questions on their product.
Seresto Dog Flea and Tick Collar contains the same percentage of active in the sizes, you would just choose the size that best fits your pets neck. It would not harm your small dog if you use the larger collar. You would just have to cut more off to fit down to size.
It takes 24 hrs to kill existing fleas and 48 hrs for ticks with the Seresto Dog Flea and Tick Collar. Re-infesting ticks are repelled and/or killed as quickly as 6 hours.
There is no need to remove the Seresto Dog Flea and Tick Collar at night even if your pet is sleeping with you. The collars have been rigoursly tested to be sure they are safe for pets and people.
The large Seresto Dog Flea and Tick Collar is 70 cm, or about 27 inches.
Typically, to get the best protection, you would not remove the Seresto Dog Flea and Tick Collar as long as you suspect the dogs are exposed to fleas and ticks. The collars are pretty durable and can hold up to activity during normal play. You can remove the collar if you feel the need to. Just be sure it is placed right back on before going outside.
Seresto Dog Flea and Tick Collar will not be harmful to you as long as you do not have any conflicting health issues.
The Seresto Dog Flea and Tick Collar can be adjusted for size and you can cut off extra length if necessary.
Although the Seresto Dog Flea and Tick Collar can also repel ticks, there’s always the possibly that a tick can attach itself to a dog. When it does happen, after a dog has worn the collar for some time, re-infesting ticks are killed as quickly as 6 hours.
We would recommend contacting the manufacturer, Bayer, for recomendations. Their number is 1-800-331-2867.
Seresto Dog Flea and Tick Collar is based on weight of the dog. For dogs under 18 lbs, they will wear the small collar and dogs over 18 lbs will use the large collar.
We cannot say for sure without knowing what type of liquid flea product has been applied. Generally, once the residual of the liquid flea product has worn off, then the Seresto Dog Flea and Tick Collar can be placed on the dog. Flea control product applications should not overlap.
Seresto Dog Flea & Tick Collars, as with most collar brands, are not labeled to control or protect your pet against mosquitoes. You can look over our Mosquito Control Guide to see tips and products on how to treat your yard and pets favorite areas outside to reduce mosquito populations and keep your pet safe.
The small plastic attachments on the Seresto Dog Flea and Tick Collar are quite pointy and can poke the dog and cause irritation. The manufacturer instructions indicate removing these pieces to avoid causing unneeded pain or discomfort to the animal.
The Seresto Dog Flea and Tick Collar can be removed by cutting with scissors.
It would be recommended to wait until the residual on the topical drops you treated your pet with has run out before applying a Seresto Dog Flea and Tick Collar to avoid overmedicating your pet.
Even though the Seresto Dog Flea and Tick Collar continues to work for 8 months, it is not a complete repellent during that time. Fleas and ticks will still need to bite to consume the active ingredient, so it can take several hours for them to die. Be sure that you are still checking outdoors and treating as needed so that the dog is not bringing fleas and ticks indoors. You can also use an additional repellent on the animal if needed for long walks outdoors or in areas that you cannot treat. We have more tips in our Flea Treatment Guide here as well.