Bayer Seresto Flea & Tick Collar for Small Dogs Up to 18 lbs (8 kgs) Size S 8 months protection against ticks, fleas and lices. For dogs 7 weeks or older up to 18 pounds Non-greasy, odorless and easy to use Repels ticks to prevent transfer of organisms that cause disease Brand New. Made in France (English instructions included). Comes without reflectors