depends on weight of your animal & if you get 4 or 6 pack but ranges from $20 on up. Truthfully trifexis or comfortis if you have a dog is better. Companion Vet on Irby fills scripts from other vets w/ prescription & is cheapest ive found for buying meds month to month. All weights under $30 per month & trifexis prevents/kills fleas & prevents heartworms + 3 other parasites. Comfortis just kills/prevents fleas. Hope this helps. @fallonzoey on all social media if you have any other questions.
I think It depends on the weight of your dog or cat.
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