Natural mosquito repellent formulas are a blend of chemical-free and natural ingredients. Below are some natural mosquito repellent formulas:

1. Peppermint oil and lemon juice : Mix a few drops of peppermint oil with the same amount of lemon juice and apply it on your skin. It is known that mosquitoes do not like the smell of this mixture.

2. Lavender oil: Mix a few drops of lavender oil with some water and put it in a spray bottle. You can protect yourself from mosquitoes by rubbing this mixture on your skin and clothes.

3. Garlic juice: Crush a few cloves of garlic and mix with water and pour into a spray bottle. Apply this mixture on your skin and around. The smell of garlic repels mosquitoes.

4. Apple Cider Vinegar: Pour a little apple cider vinegar into a spray bottle and dab it on your skin and around. Vinegar repels mosquitoes because they don't like the smell.

5. Cinnamon oil: Mix a few drops of cinnamon oil with water and pour into a spray bottle. You can protect yourself from mosquitoes by pressing this mixture on your skin and around.

6. Citrus peels: Place lemon, orange, or grapefruit peels on mosquito-infested areas. The smell of these shells repels mosquitoes.

7. Sage: Crush sage leaves and rub them on your skin or keep dried sage leaves nearby. Sage is effective in keeping mosquitoes away.

These natural mosquito repellent formulas may be effective for some people, but not for everyone. That's why it's important to do a little skin test before using your preferred formula. Wearing long sleeves and taking extra precautions in mosquito-infested areas can also be helpful.