5. Address the envelope. In the lower right third of the envelope, write the name of the person you are sending the letter to. Write the company name on the line below that (if there is a company name).
Once inside a new host, it takes approximately 6 months for the larvae to mature into adult heartworms. Once mature, heartworms can live for 5 to 7 years in dogs and up to 2 or 3 years in cats. Because of the longevity of these worms, each mosquito season can lead to an increasing number of worms in an infected pet.
And if you have mosquitoes and you have animals, youâre going to have heartworms. Itâs just that simple. It takes about seven months, once a dog is bitten by an infected mosquito, for the larvae to mature into adult heartworms. They then lodge in the heart, lungs, and surrounding blood vessels and begin reproducing.hereâs no other way dogs get heartworms. And thereâs no way to tell if a mosquito is infected. Thatâs why prevention is so important. Heartworm disease has been reported in all 50 states.