Seresto cat collar provides 8 months prevention and treatment of ticks and fleas! Expiry date: 03/2028 Brand: Seresto Seresto is a new convenient collar for your cat that can provide protection for your cat month on month from BOTH ticks AND fleas so saving you having to remember to apply monthly treatment Seresto works by releasing a sustained, active, low dose of protection that will be effective for 7-8months. It has been highly tested and is safe enough to use on kittens and cats from 10 weeks old. It is odour free, water resistant and non greasy to handle. The Seresto cat collar is size adjustable, so will fit any size of domestic cat . It also has a safety mechanism to allow instant release should your cat unfortunately get the collar caught. All in all a great new product form long term flea and tick protection!