Yeast is a type of fungus that exists throughout the environment and can cause infections. There are several home remedies that can help kill yeast, including:

1. Coconut oil: Coconut oil has antifungal properties and can be applied internally or externally to ease symptoms. It can also be used as a carrier oil for more powerful antifungal essential oils, including tea tree oil or oil of oregano.

2. Probiotics: Certain types of probiotics may combat some of the yeasts that cause vaginal yeast infections. Eating yogurt or taking a probiotic supplement can help reduce yeast in your body.

3. Tea tree oil: Some studies suggest that tea tree oil is particularly effective against yeast while not seriously affecting the bacteria that naturally live on the body. While more research needs to be done, tea tree oil may be a useful treatment.

4. Garlic: Garlic has antifungal properties and can be added to your diet to help treat yeast infections. However, inserting garlic into your vagina is not recommended as it can cause burns and pain when applied to your skin or mucosa.

5. Hydrogen peroxide: Hydrogen peroxide is an antiseptic that can kill bacteria and yeast. You can dilute it by combining equal amounts of water and hydrogen peroxide and apply it topically to help with yeast growing on the genitals.

6. Boric acid: Boric acid is a capsule inserted into your vagina that can be used to treat candida fungus that is resistant to the usual antifungal agents.

In addition to these remedies, there are several lifestyle changes you can make to help prevent yeast infections, including reducing sugar consumption, wearing loose-fitting clothing and cotton underwear, avoiding tight jeans and pantyhose, and avoiding vaginal sprays, perfumes, and lotions.