Hello! I am so sorry to hear about your bad luck with all those darn mosquitoes!
LivingAdvanced care directives in
CentralCentral sleep apnea
Central-vite Indiana, we get a fair number, but I imagine that you have some pretty good sized ones down south!!
First, let me commend you on what you have done so far. Advantix and Interceptor is a good combination as the Advantix helps to kill fleas and ticks and also offers a little bit in the way of repelling mosquitoes too. The Interceptor will help kill any heartworm larvae that a mosquito might transmit to your little guy. Just be sure to give it to him every month! I wouldn't try to use something like wipes as you might dilute the efficacy of the Advantix with repeated wipings.
Unfortunately you live in an area of the country where heartworms (and the mosquitoes) are rampant. The best thing to do is just what you are doing and make sure that he is tested for heartworms (blood test) each year. The American Hearworm Society recommends annual testing, even if your pet takes his heartworm preventive faithfully year round.
Heartworms are a big problem across a good portion of the US and more than a quarter of a million dogs are diagnosed with heartworms each year. Most of these cases are due to owner's forgetting their pets medications or choosing to ignore recommendations of their veterinarians. The heartworm preventives have a GREAT track record of protecting dogs and in the extremely rare event that a pet develops heartworms, all of the pharmaceutical companies provide financial assistance for treating the dog.
Your chihuahua is very lucky that you are so concerned about his well being. Continue to work with your family veterinarian and you should keep him safe and healthy for a very long time. Good luck with the new house!!