Baking soda is not fungicidal-that is, it does not kill the fungus. It is, however, fungistatic, which means it can prevent fungus from growing and spreading. The reason it acts like this is because it is alkaline-the opposite of acidic-and fungus is able to flourish when its environment is more acidic. It seems counter-intuitive then, that using vinegar to kill nail fungus would be a good idea, but vinegar is a fairly weak acid, and will help kill off the fungus without altering the Ph. of the environment in a harmful way.
Last, but not least, the secret to natural and effective toenail fungus treatment — and getting rid of it for good — is using essential oils. I personally recommend two powerful essential oils below if you want to get rid of toenail fungus. I consider this to be one of the most crucial steps! Even if you do this one thing to solve your problem, with or without changing your diet (although you should change your diet too!), you may be able to get rid of toenail fungus.
Try Cinnamon Leaf Oil as is a very powerful anti-fungal and dries out the nail nicely. In my case it helped to flake off the nail that was full of fungus until a new nail started to grow. Don’t know how I lived with it for so long. Apple Cider vinegar was too mild for me. Apparently to prevent it from coming back you really have to drink Cinnamon Tea (not Cassia Cinnamon which can damage your liver). I discovered I was eating all the wrong foods and my whole body was infested with a Candida overgrowth. Drinking the Cinnamon tea really cleaned up my system. I don’t eat too much sweets or dairy anymore, which seems to be the key. Oh yeah one more thing you really have to keep your toes dry and clean. I threw all my shoes and socks away, but well worth it for the results. If you want fast results, you really have to go with Cinnamon Leaf Oil. Since then I have been using the Cinnamon oil all around the house to disinfect and get rid of bad smells and mold in the bathroom. This oil is fantastic.