When Do Seresto Collars Expire?

There is no expiration date on the Seresto collars. The EPA does not require an expiration date because the product has been proven to have a long shelf life. Seresto has been tested for a 5 year shelf life as long as it is unopened. Once the product package is opened, the shelf life is 8 months.

How long is Seresto good for?

The collar's innovative technology gradually releases controlled doses of the active ingredients over a long period of time. The ingredients are transferred to your pet's skin and coat and spread across their entire body surface, keeping them protected from fleas and ticks for 7-8 months.

Do flea collars have an expiration date?

The flea & tick collars have an expiration date/shelf life of five years from manufacture date. Once the collar has been activated, it'll last up to 7 months.