✅New German Formual: More than 6 months of Best Protection-New German Technology gives you effective flea and tick prevention for dogs for 6 month! | ✅3D Protection for your pet – effective against Fleas - larvae - Ticks and Mosquitoes. This flea collar for dogs was designed to be HELPFUL either for small medium size or large pets. | ✅Quick effect– Rolf 3D Dog flea collar kills fleas within the first 24-48 hours after the start of use. Its main aim is to provide your pet with proper flea tick treatment & this flea tick collar does it well. | ✅Knock down effect – Tested by the best vets: new German formula was specially used in the best flea collar and helps to achieve the best results. | ✅Adjustable Flea Collar - Suitable for different sizes dogs