[theBCnut]

I think you are mixing a few different posts together. There isn’t an alternative heartworm prevention like that at all. DE was mentioned as a possible for intestinal parasites. It could come in a big jar and everyone was talking about what else it is good for i.e. hair and nails.

I think the holistic approach is more towards using natural mosquito repelling sprays and keeping your dog in during bad mosquito times. And making sure his immune system is as healthy as possible.