Does not work at all. All but one of the puppies in the litter had a Hartz flea collar. He had a TSC Zodiac. Five to five Hartz collared puppies had horrible fleas within a week. The pup with the Zodiac collar didn't have them. The vet recommended Parastar Plus. We bought this and used it on five puppies that had fleas. All fleas were gone within 36 hours. Hartz collars were a waste of time and money.
Seresto Small Dog Flea And Tick Collar - 8 Months Protection For Dogs Up To 18 Pounds (1 Pack)
19 Review
Rolf Club Flea & Tick Collar for Cats - 8 Months Protection, Waterproof Repellent, 3D Level Protect, Tick Knockdown Effect, Safe Treatment Control - One Size Fits All
18 Review
Seresto Flea And Tick Collar For Small Dogs (Up To 18 Pounds) - 8 Month Protection (2 Pack)
19 Review
2-Pack Seresto Flea & Tick Collar For Large Dogs (Over 18 Pounds) - 8 Month Protection
19 Review
π° Cute Bunny Rabbit Hat with Ears for Cats & Small Dogs: Ideal Party Costume & Halloween Accessory by BWOGUE
9 Review
NACOCO Pet Clothes Owl Sweater: Perfect Christmas Dog Apparel for Cats and Dogs!
9 Review
πΆ Yoda Dog Tee: Unleash the Force in Style with Star Wars for Pets!
9 Review
πΎ Turtleneck Pet Sweater with Leash Hole - Cute Winter Knitwear for Small Dogs and Cats with Snowflake Pattern - Cold Weather Clothes Outfit by BINGPET
11 Review