These string light bulbs are safe to use both indoor and outdoor and tested to withstand water and weather.
30-foot String Light Kit with Clear Vintage Style S14 Incandescent Light Bulbs, 2PK The included bulbs are long lasting, meaning you'll experience fewer burnouts and replacement needs along the string. Perfect for patio lighting, gazebos, porches, outdoor events, parties, restaurants/bars, weddings, living rooms, bedrooms, and more.