Q: We have three small dogs — two cavalier King Charles spaniels and a scnoodle. There appears to be a growing body of claims that flea and tick medicines, including Bravecto, NexGuard, and Simparica, are harmful. Apparently, their chemical compounds impact an insect’s nervous system, causing death. The question then becomes: Do they also impact a dog’s nervous system? I am looking for either reassurance or a good alternative. We live in a high-tick area, and I have already had Lyme disease once.
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