What are the best home remedies for a guy that has a yeast infection?

Yeast infection in a guy is typically external, on the skin it is called ringworm or under the skin fold it is called intertrigo. Occasionally it can happen in the mouth which is called thrush. For skin fungal infection, topical over-the-counter such as Lotrimin or Lamisil are readily available at your local grocery stores. If you have this inside your mouth, I would recommend seeing your doc!