It's easy! No mess, no stress. Just clip'n go.Spectra Shield™ Collar Attached Medallion offers 4 months of flea and tick control for dogs.The medallion snaps on easily to the dog’s collar so there is no mess and no stress! It is available in 3 different weight sizes. The medallion contains a powerful synergized pyrethroid - zetacypermethrin - that kills adult fleas and ticks at maximum efficacy. The second ingredient, Piperonyl Butoxide, is a mixedfunction oxidase inhibitor which ensures the maximum effectiveness of Spectra Shield against ticks during all stages of their blood-feeding life cycle. While this highly effective combination protects pets, it exhibits very low toxicity to animals and humans.

• Quick and Easy, snap on motion
• Flea & tick protection for 4 months at a great value
• Convenient alternative to monthly treatments
• No more hassle remembering to apply every month
• Can be worn during swimming or bathing
• Spectra Shield® - Sustained Release Delivery System: Continuously releases very small amounts of active ingredients. Consistently replenishes the actives to the dog’s skin and hair coat.  Avoids heavy concentrations and variations of active ingredients
• No activation needed... Just clip’n go!