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Defend your dog against stubborn parasites and flea re-infestations with Vivaldis Vi-Fi Forte Spot-On Solution for Dogs, available online at PetMitra. Formulated by Vivaldis Animal Health, this dual-action topical treatment provides 30 days of comprehensive protection against biting fleas, disease-transmitting ticks, and irritating chewing lice. Vi-Fi Forte combines Fipronil—a proven ectoparasiticide that kills adult parasites on contact by disrupting their GABA-gated chloride channels—with (S)-Methoprene, a potent Insect Growth Regulator (IGR). While Fipronil rapidly eliminates biting adults, (S)-Methoprene prevents flea eggs, larvae, and pupae from maturing into biting adults. This breaks the flea life cycle, preventing environmental contamination inside your home, bedding, and carpets. The non-systemic formulation integrates with the natural lipid layer of your dog's skin and hair follicles, providing waterproof protection that remains effective even after bathing or outdoor play.