Yall be very careful if using Proheart 6... It is a six month treatment for heartworm prevention. I understand there have been about 500 dogs that have died from using this. I have an acquaintance in Georgetown that had a 2 year old Lab die this weekend while he was in the kennel.

Once again, I do not know this as fact - yet. Just a heads up... you may want to contact your Vet and see what their position is on this product.