PetSmart has heartworm testing you have to have a 12 month plan with them. So you can buy online with heartworm for your Critters.
They do not do heartworm testing. That is some thing that needs to be done thru a vet. In our area we don't have alot of cases. Most cases come from the Midwest.
I'm not really sure but you might really want to try pet cove. I know there they do shots for puppies on certain days. They might do the test for your dogs as well.
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