For cats and small breed dogs (up to 8kg bodyweight) 

The Seresto Collar is Bayer’s newest product for safely and effectively protecting your pets from fleas and ticks.
SERESTO FLEA AND TICK COLLAR provides the performance you expect from a flea and tick topical in an easy-to-use collar that provides continuous protection against fleas and ticks for eight months.

With Seresto®, pet owners have an effective and affordable option for flea and tick control in an easy-to-use eight-month collar.