We do give Dee a Sentinel Flavor Tab on the first of each month. We get a years worth at a time from our vet. They're supposed to prevent heartworms and fleas, and I don't know whether that's what works, or whether it's me spraying for insects once or twice a year, but anyway, Dee has never had fleas, and as I said, I haven't even seen a tick in many years. Dee was just 4 years old last week, so this was definitely her first tick, and we hope her last one.
Our vet is less than 2 miles from our home, so while I was spraying the yard, Margaret took Dee to the vet to see what the vet would say about the tick. Anyway the vet removed the tick, thinks she got all of it, recommended a little Neosporin on that spot, and didn't even charge for the office visit.