Purchased some Nexgard for our dog a few months ago. After using twice (two months) it is not working. We average pulling 50 ticks off of her every single day. If we miss some, they become engorged. This medication is not working at all. I tried to see if I could exchange the medication for a different batch and was told they are unable to do an exchange...of course, that's because it will cost me $40.00 more to order now than what I paid in March. I have been waiting for about a month for a return envelope and it still has not arrived. Also, I was told that they are unable to give me a refund for the two used ones. When I said I want a full refund...that the chews didn't work, I was told that the ticks are getting immune to Nexgard. When I said ... so... you're saying that Nexgard isn't working anymore on ticks, he backtracked and said that it works fine. Which is it?? It cannot be both. I don't know if the ticks are becoming immune to current medications or if this was a bad / old batch. I guess we need to get chickens and guinea hens to get rid of the ticks instead. It's probably better for our dogs anyway to not have to ingest something that puts enough poison into their blood to kill something that bites them. That can't be good for her long-term health.
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