10 Pack Replacement Cartridges for Pet Convincer II, Lite & Plus

These replacement cartridges helped us train our dog to not bark at people walking in front of our house. Whenever someone would walk past our house, especially if they were walking a dog of their own, our dog would bark his head off until they were out of sight. A quick shot to his shoulder area with the Pet Convincer II shuts him up real quick. Now when people walk by he just watches them go by and remains silent. Once in a while he will start barking and all we have to do is grab the Pet Convincer and once he sees us holding it he stops barking.All of the cartridges were in good condition and the threads were all in good shape. Saved a bunch of money over buying them from the bike shop.