Efficacy: Collars repel and kill ticks before they bite and prevent flea infestations Long-Lasting: Collars deliver their active ingredients in controlled but effective amounts. This means your cat is continuously protected against fleas and ticks for up to 8 months. Safety: The collar is suitable for outside drivers due to its integrated predetermined breaking point. The two-phase safety lock reduces the risk of the cat being injured or trapped Compatibility: collars are suitable for 10-week-old kittens Waterproof and odorless: the collar is odorproof and waterproof. It’s a simple and convenient way to effectively protect your four-legged friend from external parasites.