![Amazon.com : Hartz UltraGuard Flea & Tick Collar for Dogs and Puppies - 26" Neck, 7 Month Protection : Pet Flea And Tick Collars : Pet Supplies Amazon.com : Hartz UltraGuard Flea & Tick Collar for Dogs and Puppies - 26" Neck, 7 Month Protection : Pet Flea And Tick Collars : Pet Supplies](https://images-na.ssl-images-amazon.com/images/I/81bISvJKa+L._AC_UL210_SR210,210_.jpg)
Amazon.com : Hartz UltraGuard Flea & Tick Collar for Dogs and Puppies - 26" Neck, 7 Month Protection : Pet Flea And Tick Collars : Pet Supplies
![Amazon.com : Hartz UltraGuard Flea & Tick Collar for Dogs and Puppies - 26" Neck, 7 Month Protection : Pet Flea And Tick Collars : Pet Supplies Amazon.com : Hartz UltraGuard Flea & Tick Collar for Dogs and Puppies - 26" Neck, 7 Month Protection : Pet Flea And Tick Collars : Pet Supplies](https://images-na.ssl-images-amazon.com/images/I/81KbRKmfo7L._AC_UL210_SR210,210_.jpg)
Amazon.com : Hartz UltraGuard Flea & Tick Collar for Dogs and Puppies - 26" Neck, 7 Month Protection : Pet Flea And Tick Collars : Pet Supplies
![Efficacy of a combination of 10% imidacloprid and 4.5% flumethrin (Seresto®) in slow release collars to control ticks and fleas in highly infested dog communities | Parasites & Vectors | Full Text Efficacy of a combination of 10% imidacloprid and 4.5% flumethrin (Seresto®) in slow release collars to control ticks and fleas in highly infested dog communities | Parasites & Vectors | Full Text](https://media.springernature.com/lw685/springer-static/image/art%3A10.1186%2F1756-3305-6-210/MediaObjects/13071_2013_Article_1103_Fig3_HTML.jpg)