I am now using Soledad's deworming collar for external use for dogs, and its patented polymer matrix sustained-release technology can last for eight months. Just put it on as required. Waterproof and odorless, dogs don't have to take it off to play with water. Convenient and convenient, the key is not to forget. It is worth mentioning that Soledad collar can repel ticks and prevent ticks from biting and sucking blood.
By the way, this collar is too cost-effective. A collar with more than 300 yuan can last for eight months, with an average of only one yuan a day, which is not too good.